Gaya APA
Babbie, Earl. (1986).
The Practice of social research (4e).
Belmont, California:
Wadsworth Publ.
Gaya Chicago
Babbie, Earl.
The Practice of social research.
4e
Belmont, California:
Wadsworth Publ,
1986.
Buku.
Gaya MLA
Babbie, Earl.
The Practice of social research.
4e
Belmont, California:
Wadsworth Publ,
1986.
Buku.
Gaya Turabian
Babbie, Earl.
The Practice of social research.
4e
Belmont, California:
Wadsworth Publ,
1986.
Buku.