Snyder, Thomas Elliott, author
Smithsonian Institution, 1956
Buku Teks
Nisonger, Thomas E., author
Libraries Unlimited, 2003
Buku Teks
Patricia Beata Kurnia, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2021
UI - Skripsi (Membership)
Willetts, William Y., author
Department of Indian Studies University of Malaya, 1966
Buku Teks
edited by Peter Lumb & Anne Hazell
Hodja Educational Resources Cooperative, 1983
Buku Referensi