Mardianus, author
1995
UI - Skripsi (Membership)
Febrina Ika Shinta, author
1998
UI - Skripsi (Membership)
Yuyuk Pujiastuti, author
1990
UI - Skripsi (Membership)
Evans, B. Ifor
Penguin Books , 1948
Buku Teks
Joice Sandra Antonio, author
1995
UI - Skripsi (Membership)