Walters, Martin
Miles Kelly, 2000
Buku Referensi
Stefferud, Alfred, editor
United States. Government Printing Office, 1966
Buku Referensi
Kothari, Ashish M., author
Universities Press, 2007
Buku Teks
McClure, H. Elliott (Howe Elliott), 1910-, author
SEATO, 1974
Buku Teks
McClure, H. Elliott (Howe Elliott), 1910-, author
Applied Scientific Research Corporation, [date of publication not identified]
Buku Referensi