Norris, Christopher, author
Ar-Ruzz, 2006
Buku Teks
Ariana Ratnasari, author
2017
UI - Skripsi (Membership)
Thiroux, Jacques P. author
Prentice-Hall, 1995
Buku Teks
Westview Press, 1985
Buku Teks
Thiroux, Jacques P. author
MacMillan Publishing Company, 1985
Buku Teks