by William Brass ... [et al.]
Princenton University Press, 1968
Buku Teks
Chang, Kwang-Chih, author
Yale University Press, 1977
Buku Teks
Italiaander, Rolf
Prentice-Hall, 1961
Buku Teks
edited by Eric Delson, Ian Tattersall, John A. Van Couvering and Alison S. Brokks
Garland Publishing, 2000
Buku Referensi
Gabel, Creighton
Holt, Rinehart and Winston, 1967
Buku Teks