Gaya APA
Backstrom, Charles H., Hursh, Gerald. (1981).
Survey research .
New York:
John Wiley & Sons.
Gaya Chicago
Backstrom, Charles H., Hursh, Gerald.
Survey research.
New York:
John Wiley & Sons,
1981.
Text.
Gaya MLA
Backstrom, Charles H., Hursh, Gerald.
Survey research.
New York:
John Wiley & Sons,
1981.
Text.
Gaya Turabian
Backstrom, Charles H., Hursh, Gerald.
Survey research.
New York:
John Wiley & Sons,
1981.
Print.