Gaya APA
Essentials of Sociology. (2006).
California:
[s.n.].
Gaya Chicago
Essentials of Sociology.
.
California:
[s.n.],
2006.
Text.
Gaya MLA
Essentials of Sociology.
.
California:
[s.n.],
2006.
Text.
Gaya Turabian
Essentials of Sociology.
California:
[s.n.],
2006.
Print.