Mansell, 1984
Buku Referensi
Harter, H. Leon, author
Ohio: American Sciences Press, 1977
Buku Teks
Parker, William, author
The Scarecrow Press, Inc., 1977
Buku Teks
editor, Wayne Surdam
Association for Asian Studies, 1988
Buku Referensi
David L. Sills, editor
The Free Press; Coolier Macmillan Publisher, 1979
Buku Referensi