Tyas Handayani
Fakultas Psikologi Universitas Indonesia, 1996
UI - Skripsi Membership
Birru Hayyu S.
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
edited by Garth J.O. Fletcher and Margaret S. Clark
Blackwell, 2003
Buku Teks
DuBrin, Andrew J.
Prentice-Hall, 2000
Buku Teks
Novani Nugrahani
2004
UI - Skripsi (Membership)