Chambers, Erve
Waveland Press, 1989
Buku Teks SO
Ferraro, Gary P.
Cengage Learning, 2018
Buku Teks SO
Ferraro, Gary P.
Delmar Cengage Learning, 2014
Buku Teks SO
Ember, Carol R.
Prentice-Hall, 1985
Buku Teks SO
Haviland, William A.
Rinehart and Winston, 1974
Buku Teks SO