Juan Camilo
I'm using \usepackage[spanish]{babel}
\usepackage{apacite}
\usepackage{natbib} as packages for the cites but if there's more than three authors in a cite, for instance the output is "(Guillermo y cols., 2019)". How can I change the "y cols." for "et al."?.
Phelype Oleinik
apacite uses specific commands for localisation (in the file spanish.apc loaded at \AtBeginDocument) so you can just redefine them by adding this to your preamble after loading apacite:

\AtBeginDocument{%
\renewcommand{\BOthers}[1]{et al.\hbox{}}%
\renewcommand{\BOthersPeriod}[1]{et al.\hbox{}}%
}


Compilable example:


\documentclass{article}
\usepackage[spanish]{babel}
\usepackage{apacite}
\usepackage{natbib}
\AtBeginDocument{%
\renewcommand{\BOthers}[1]{et al.\hbox{}}%
\renewcommand{\BOthersPeriod}[1]{et al.\hbox{}}%
}
\begin{document}
\citep{inproceedings-full}
\bibliographystyle{apacite}
\bibliography{xampl}
\end{document}