F.
\definebtxdataset[example]
\usebtxdataset[example][test.bib]
\definebtxrendering[example][dataset=example,method=local,alternative=apa]
\setupbtxlistvariant[etallimit=3,etaldisplay=3,etaltext={\it et al}]
\starttext
a\cite[example::onnela]
\placebtxrendering[example]
\stoptext
@Article{onnela,
author = {J. P. Onnela and D. J. Fenn and S. Reid and M. A. Porter
and P. J. Mucha and M. D. Fricker and N. S. Jones},
title = {Taxonomies of networks from community structure},
journal = {Phys. Rev. E},
volume = {86},
number = {3},
pages = {036104},
year = {2012},
entrydate = {2014/07/09},
}