Lau, Richard R, author
Cambridge University Press, 2006
Buku Teks
Bone, Hough Alvin, author
McGraw-Hill, 1981
Buku Teks
Adithia Ramadhan, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
UI - Skripsi (Membership)
Medvic, Stephen K., author
Routledge, Taylor & Francis Group, 2018
Buku Teks
Heard, Alexander
Anchor Books Doubleday and Company, 1962
Buku Teks