Cochran, W. G. (1977). Sampling Techniques (3rd ed.). Wiley.
Tohutoru Kātū Chicago (17th ed.)Cochran, William G. Sampling Techniques. 3rd ed. New York: Wiley, 1977.
Tohutoro MLA (9th ed.)Cochran, William G. Sampling Techniques. 3rd ed. Wiley, 1977.
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