Sage Publications, 1981
Buku Teks
American Psychological Assosiation, 2004
Majalah, Jurnal, Buletin
edited by John P. Robinson, Phillip R. Shaver, Lawrence S. Wrightsman
Academic Press, 1991
Buku Teks
Shibutani, Tamotsu
Prentice-Hall, 1961
Buku Teks
DeLamater, John D.
Colorado Westview Press, 2014
Buku Teks