Gaya APA
Social Research Methods. (1973).
New Mexico:
[s.n.].
Gaya Chicago
Social Research Methods.
.
New Mexico:
[s.n.],
1973.
Text.
Gaya MLA
Social Research Methods.
.
New Mexico:
[s.n.],
1973.
Text.
Gaya Turabian
Social Research Methods.
New Mexico:
[s.n.],
1973.
Print.