Hall, Bradfgord J
Thomsonm, 2005
Buku Teks
Yusuf Arianto
Fakultas Psikologi Universitas Indonesia, 2013
UI - Tesis (Membership)
Guy, Vincent
Tian Xia Wen Hua, 1992.
Buku Teks
Anathalia
Fakultas Teknik Universitas Indonesia, 2013
UI - Skripsi (Membership)
Helmut Anheier, Yudhishthir Raj Isar, editor
SAGE Publications, 2008
Buku Teks