May, Larry, author
Cambridge University Press, 2005
Buku Teks
Fathia, author
Universitas Indonesia, 2000
UI - Skripsi (Membership)
Sellars, Kirsten, author
Cambridge University Press, 2015. ©2013
Buku Teks
Felicia Clarissa, author
Universitas Indonesia, 2014
UI - Skripsi (Membership)
Endi Junaedi, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1976
UI - Skripsi (Membership)