@inbook{Tafjel1986,
author = {Tafjel, H. and Turner, J.C.},
title= {The social identity theory of intergroup behavior},
year = {1986},
editor = {Worchel, S.},
editor = {Austin, W. G.},
booktitle = {Psychology of intergroup relation},
address = {Chicago},
publisher = {Hall Publishers},
}