# APA citation not coming up consistently

I have an overleaf project created using this template that is over 200 page long. APA citation in the text are not appearing for some bibitems. Below is the MWE code:

\documentclass[letterpaper,             % Use US letter-size paper
oneside,                 % No verso and recto differences
12pt]                    % Use a specific font size
{memoir}
\usepackage[backend=biber,
isbn=false,
dashed=false,
style=apa]%
{biblatex}
\bibliography{src/sample/library}
\begin{document}
Students can learn and absorb knowledge in a variety of ways depending on their learning styles, and the teacher can present their content in various teaching styles \parencite{felder1988learning}.
The model predicted by the BN is compared with Felder’s scale obtained using the Index of Learning Styles questionnaire \parencite{soloman2005index}
\end{document}


For the felder1988learning it is appearing as "(R. M. Felder & Silverman, 1988)", while for soloman2005index it is appearing as "(Soloman & Felder, 2005)". Below is the entries in bib file corresponding to the two. Why are the citations not consistent, despite having similar format of author names for the two entries? How do I drop the "R. M." from (R. M. Felder & Silverman, 1988)?

@article{felder1988learning,
title        = {Learning and teaching styles in engineering education},
author       = {Felder, Richard M and Silverman, Linda K},
year         = 1988,
journal      = {Engineering education},
publisher    = {North Carolina},
volume       = 78,
number       = 7,
pages        = {674--681}
}
@article{soloman2005index,
title        = {Index of learning styles questionnaire},
author       = {Soloman, Barbara A and Felder, Richard M},
year         = 2005,
journal      = {NC State University. Available online at: https://www.engr.ncsu.edu/stem-resources/legacy-site/learning-styles/ (last visited on 02.14.2021)},
volume       = 70
}

• From the entries you have shared so far I cannot reproduce the behaviour you describe. From gist.github.com/moewew/39804b7f8cfb9cb0ea8877f5bb3ae117 I get i.stack.imgur.com/4zM5m.png as expected. The beheaviour you describe would be correct APA style if you cite another paper where a different Felder is the first author (or maybe the same Felder, but in a slightly different format, e.g. Felder, Richard M vs Felder, Richard). – moewe Mar 27 at 6:04
• Reference for my last claim in the comment above: apastyle.apa.org/style-grammar-guidelines/citations/…. If you want us to investigate this issue in your setting further, please consider posting a fully compilable, yet minimal example document that reproduces the behaviour you are seeing with as little code as possible (tex.meta.stackexchange.com/q/228/35864, tex.meta.stackexchange.com/q/4407/35864). Make sure the example you post actually reproduces the issue - some things are context dependent. – moewe Mar 27 at 7:00
• Off-topic: the entry type @article would not appear to be the correct choice for the soloman2005index entry. Something like @misc or @online would be far more appropriate. – Mico Mar 27 at 7:04
• @Mico, soloman2005index is working as expected, so I'd rather not touch it :P – vipin8169 Apr 7 at 2:30
• @moewe, Thanks for your input. "Felder, Richard M" and "Felder, Richard" were both present, so I fixed the latter to say the same name. It fixed the issue, much thanks to you! Please post that as a solution. – vipin8169 Apr 7 at 2:35

From the entries you have shared so far I cannot reproduce the behaviour you describe. With

\documentclass[american]{article}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[backend=biber, style=apa]{biblatex}

\begin{filecontents}{\jobname.bib}
@article{felder1988learning,
title        = {Learning and teaching styles in engineering education},
author       = {Felder, Richard M and Silverman, Linda K},
year         = 1988,
journal      = {Engineering education},
publisher    = {North Carolina},
volume       = 78,
number       = 7,
pages        = {674--681}
}
@online{soloman2005index,
title        = {Index of learning styles questionnaire},
author       = {Soloman, Barbara A and Felder, Richard M},
year         = 2005,
organization = {NC State University},
url          = {https://www.engr.ncsu.edu/stem-resources/legacy-site/learning-styles/},
urldate      = {2021-02-14},
}
\end{filecontents}

\begin{document}
Lorem \autocite{felder1988learning}

ipsum \autocite{soloman2005index}

\printbibliography
\end{document}


as expected.

The behaviour you describe would be correct APA style if you cite another paper where a different Felder is the first author (see https://apastyle.apa.org/style-grammar-guidelines/citations/basic-principles/citing-authors-same-surname).

But it is also possible that both Felders are the same person, they are given in different versions in the .bib file, e.g. Felder, Richard M vs Felder, Richard. In that case it may help to normalise the name to the same version.