Gaya APA
Babbie, Earl. (1998).
The Practice of Social Research .
Belmont:
Wadsworth.
Gaya Chicago
Babbie, Earl.
The Practice of Social Research.
Belmont:
Wadsworth,
1998.
Text.
Gaya MLA
Babbie, Earl.
The Practice of Social Research.
Belmont:
Wadsworth,
1998.
Text.
Gaya Turabian
Babbie, Earl.
The Practice of Social Research.
Belmont:
Wadsworth,
1998.
Print.