Kabagarama, Daisy
Allyn and Bacon, 1993
Buku Teks
Prentice Hall Press, 1989
Buku Teks
Greif, Judith, author
John Wiley & Sons, 1994
Buku Teks
Armstrong, Michael, author
[Publisher not identified], [Date of publication not identified]
Buku Teks
Adrian Brahma Aditya, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2019
UI - Tesis Membership