APA

Cochran W. G., . (1977). Sampling techniques. New York: John Wiley & Sons.

Chicago

Cochran William G, . 1977. Sampling techniques. New York: John Wiley & Sons.

Harvard

Cochran W. G., . (1977). Sampling techniques. New York: John Wiley & Sons.

MLA

Cochran William G, . Sampling techniques. New York: John Wiley & Sons. 1977.