Greenwood, Susan, author
Berg, 2000
Buku Teks
Stein, Rebecca L., author
Pearson Education, 2005
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