Gaya APA
Fowler Jr, Floyd J. (1993).
Survey research methods (2nd ed).
London:
.
Gaya Chicago
Fowler Jr, Floyd J.
Survey research methods.
2nd ed
London:
,
1993.
BUKU.
Gaya MLA
Fowler Jr, Floyd J.
Survey research methods.
2nd ed
London:
,
1993.
BUKU.
Gaya Turabian
Fowler Jr, Floyd J.
Survey research methods.
2nd ed
London:
,
1993.
BUKU.