Gaya APA
Cochran, William. (1988).
Sampling techniques third edition .
Amerika Serikat:
Harvard Universty.
Gaya Chicago
Cochran, William.
Sampling techniques third edition.
Amerika Serikat:
Harvard Universty,
1988.
Text.
Gaya MLA
Cochran, William.
Sampling techniques third edition.
Amerika Serikat:
Harvard Universty,
1988.
Text.
Gaya Turabian
Cochran, William.
Sampling techniques third edition.
Amerika Serikat:
Harvard Universty,
1988.
Print.