Clarendon press , 1996
Buku Teks
Goodman, David S. G., author
Routledge, 1994
Buku Teks
Dinda Ning Kasih Abduh Putri, author
2016
UI - Skripsi (Membership)
editor, Umar Suryadi Bakri
Pustaka Sinar Harapan, 1996
Buku Teks
The University of Michigan, 1986
Buku Teks