Lustbader, Eric V
New York:, 1990
Buku Teks
Bayu Kristianto, reviewer
2000
UI - Skripsi (Membership)
Canot, Robert
New York Bantam Books c 1967
Buku Teks
Stafford, J.
New York Harcourt, Brace and Company 1944
Buku Teks
Wallace, Randall
New York Pocket Book 1995
Buku Teks