@inbook{Ajzen2012,
author = {Ajzen, I.},
title= {The theory of planned behavior},
year = {2012},
editor = {Lange, P.A.M.},
editor = {Kruglanski, A.W.},
editor = {Higgins, E.T.},
booktitle = {Handbook of theories of social psychology},
address = {London},
publisher = {Sage},
pages = {438--459},
}