Deem, Rosemary
Routledge, 2012.
Buku Teks
Richard Arum, Irenee R. Beattie, Merced, Karly Ford, editors
SAGE Publications, 2015
Buku Teks
Noriah Taslim
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1991
UI - Tesis Membership
Hofstetter, Fred Thomas, 1949-
McGraw-Hill, 1995
Buku Teks
London, 2004
Buku Teks