Enos, Matthew
Wadsworth, 2002
Buku Teks
Banister, Peter
Open University Press, 1994
Buku Teks
edited by Cath Sulivan and Michael A. Forrester
Sage, 2019
Buku Teks
Valentino, Lisa
Thomson Wadsworth, 2003
Buku Teks
Wistiadola Septiani
Fakultas Psikologi Universitas Indonesia, 2015
UI - Tesis (Membership)