# Cite one time full name + year with biblatex

My biblatex options look like this

\usepackage[
style=authoryear,       % author-year style in references
citestyle=authoryear-icomp, % compact author-year in cites
url=false,                   % clicable urls in ref.
uniquelist=false,
uniquename=false, % turn off auto-disambiguaty
backref=true,               % auto backrefs in ref.
datezeros=true,         % dates with leading zeros
maxcitenames=1, % et al. with two or more authors
%indexing,                   % to create an index of persons
sortcites=false,
sorting=nyt,
%defernumbers=true,     % numbers in any bibliography
backend=biber]              % use biber for compiling
{biblatex}


How can I cite one time only in the text full author names and year, like

Gladwell, Malcolm, John Doe and John Smith (2005)?

@book{Gladwell2005,
author = {Gladwell, Malcolm and Doe, John and Smith, John},
publisher = {Back Bay Books},
title = {Blink: The Power of Thinking Without Thinking},
year = {2005},
}


All the other solutions given on LaTeX stack exchange have not helped me.

• When you say 'one time', do you meant that you want the first citation in this format, or do you want a new command that you can use at will? – moewe Mar 9 '17 at 8:17
• style=authoryear, citestyle=authoryear-icomp is the same as style=authoryear-icomp. Both settings will automatically set sorting=nyt, so you don't need to do that yourself. sortcite=false is a somewhat bad idea with style=authoryear-icomp, you lose some of the compressing features. – moewe Mar 9 '17 at 8:20
• I meant just once in the text (somewhere I determine). Not first citation. Thank you for the option input. I activated sortcites=false, because I want the cites in the text chronological, so (Joe 2015; Smith 2016), not (Smith 2016; Joe 2015). – Til Hund Mar 9 '17 at 8:24

You can define a new command for that \extcite

\DeclareCiteCommand{\extcite}
{\usebibmacro{cite:init}%
\usebibmacro{prenote}}
{\usebibmacro{citeindex}%
\begingroup
\defcounter{maxnames}{999}%
\DeclareNameAlias{labelname}{given-family}%
\usebibmacro{cite}%
\endgroup}
{}
{\usebibmacro{cite:postnote}}


Alternatively, it is enough to just do

\AtNextCite{\AtEachCitekey{\defcounter{maxnames}{999}\DeclareNameAlias{labelname}{given-family}}}


right before the citation you want to change. You can of course wrap this into a command:

\newcommand*{\extendnextcite}{%
\AtNextCite{%
\AtEachCitekey{%
\defcounter{maxnames}{999}%
\DeclareNameAlias{labelname}{given-family}}}}


and then use that as

\extendnextcite\cite{sigfridsson}