2014
UI - Skripsi (Membership)
Haslam, Sara, author
Routledge, 2009
Buku Teks
McQuade, Donald, author
Alfred A. Knopf, 1983
Buku Teks
Gelb, Ignace Jay, author
The University of Chicago , 1963
Buku Teks
Claiborne, Robert, author
Time-Life Books, 1974
Buku Teks