Babbie, Earl R., author
Cengage Learning, 2017
Buku Teks
Neuman, Lawrence W., author
Pearson New International edition, 2014
Buku Teks
Strauss, Anselm L., author
Sage, 1990.
Buku Teks
Elliot Aronson...[et al.]
McGraw-Hill , 1990
Buku Teks
Cohen, Jeremy, author
Sage, 1990
Buku Teks