Moe, Dean
Christian symbols handbook : commentary & patterns for traditional and contemporary symbols
Augsburg Publishing House, 1985
 Buku Referensi
Eberhard, Wolfram, 1909-1989
A dictionary of Chinese symbols: hidden symbols in Chinese life and thought
St Edmundsbury Press, 1996
 Buku Teks
The Herder dictionary of symbols: symbols from art, archaeology, mythology, literature, and religion
Chiron Publications, 1993
 Buku Referensi
Myths and symbols: studies in honor of Mircea Eliade / edited by Joseph M. Kitagawa and Charles H. Long with the collaboration of Jerald C. Brauer and Marsall G.S. Hodgson
The University of Chicago Press, 1971
 Buku Teks
Steyaert, Thomas A.
Biology : a contemporary view
McGraw-Hill, 1975
 Buku Teks