Haviland, William A., author
Rinehart and Winston, 1974
Buku Teks
Nash, Manning
Chandler Publishing Company, 1966
Buku Teks
Haviland, William A., author
Erlangga, 1988
Buku Teks
Foster, George M., author
Brown and Comp, 1969
Buku Teks
the Dushken Publishing, 1974
Buku Teks