Gaya APA
Cochran, William G.. (1977).
Sampling Techniques (3rd ed.).
New York:
John Wiley & Sons.
Gaya Chicago
Cochran, William G..
Sampling Techniques.
3rd ed.
New York:
John Wiley & Sons,
1977.
Text.
Gaya MLA
Cochran, William G..
Sampling Techniques.
3rd ed.
New York:
John Wiley & Sons,
1977.
Text.
Gaya Turabian
Cochran, William G..
Sampling Techniques.
3rd ed.
New York:
John Wiley & Sons,
1977.
Print.