APA

Cochran (William A), . (1977). Sampling Techniques. Ed 3. : .

Chicago

Cochran (William A), . 1977. Sampling Techniques. Ed 3. : .

Harvard

Cochran (William A), . (1977). Sampling Techniques. Ed 3. : .

MLA

Cochran (William A), . Sampling Techniques. Ed 3. : . 1977.