Chambers, Erve, author
Waveland Press, 1989
Buku Teks
Foster, George M., author
Brown and Comp, 1969
Buku Teks
Ember, Carol R., author
Prentice-Hall, 1985
Buku Teks
Haviland, William A., author
Rinehart and Winston, 1974
Buku Teks
Haviland, William A., author
Erlangga, 1988
Buku Teks