Hines, Thomas S., author
University of California Press, 1994
Buku Teks
Yus Novita S., author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2007
UI - Skripsi Membership
Nixon, Richard, author
Warner Books, 1982
Buku Teks
AT The Clarendon Press, 1964
Buku Teks
Siti Masitoh, author
Universitas Indonesia, 2003
UI - Skripsi (Membership)