Tohutoro APA (7th ed.)

COCHRAN, W. G. (1963). Sampling techniques; 2nd ed (2nd ed.). John wiley.

Tohutoru Kātū Chicago (17th ed.)

COCHRAN, William G. Sampling Techniques; 2nd Ed. 2nd ed. New York: John wiley, 1963.

Tohutoro MLA (9th ed.)

COCHRAN, William G. Sampling Techniques; 2nd Ed. 2nd ed. John wiley, 1963.