BibLaTeX – Remove Year Labels

Question

I started using BibLaTeX with the APA style, and I noticed that if two dates are the same (including n.d.), a label will be added to the year (e.g. 2016b or n.d.-b). I would like to remove these.

Here is a MWE:

\documentclass{article}
\usepackage[american]{babel}
\usepackage{csquotes}
\usepackage[backend=biber,style=apa]{biblatex}
\DeclareLanguageMapping{american}{american-apa}

\addbibresource{mwe.bib}

\begin{document}

\cite{tutpnt1}

\cite{tutpnt2}

...

\printbibliography

\end{document}

with mwe.bib containing:

@online{tutpnt1,
author = {{TutorialsPoint}},
title = {{SLDC -- Iterative Model}},
url = {http://www.tutorialspoint.com/sdlc/sdlc_iterative_model.htm},
date = {},
urldate = {2016-04-09}
}

@online{tutpnt2,
author = {{TutorialsPoint}},
title = {{SLDC -- V-Model}},
url = {http://www.tutorialspoint.com/sdlc/sdlc_v_model.htm},
date = {},
urldate = {2016-04-09}
}

Output with dates:

Output with no dates:

Is there any way to remove these labels? This assignment requires the APA style to be used. I am currently using MiKTeX v2.9.

Answer 1

You can get rid of the extrayear fields with

\AtEveryCitekey{\clearfield{extrayear}}
\AtEveryBibitem{\clearfield{extrayear}}

You will probably lose APA compliance that way and finding the right entry in the bibliography becomes a game of chance.