Cochran, W. G. (1977). Sampling Techniques (3rd ed.). Wiley.
Chicago-čujuhus (17. p.)Cochran, William G. Sampling Techniques. 3rd ed. New York: Wiley, 1977.
MLA-čujuhus (9. p.)Cochran, William G. Sampling Techniques. 3rd ed. Wiley, 1977.
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