Gaya APA
Babbie, Earl. (1992).
The Parctive of Social Research .
California:
Wadsworth.
Gaya Chicago
Babbie, Earl.
The Parctive of Social Research.
California:
Wadsworth,
1992.
Text.
Gaya MLA
Babbie, Earl.
The Parctive of Social Research.
California:
Wadsworth,
1992.
Text.
Gaya Turabian
Babbie, Earl.
The Parctive of Social Research.
California:
Wadsworth,
1992.
Print.