L'Esperance, W. L. (1971). Modern statistics for business and economics. Macmillan.
Tohutoru Kātū Chicago (17th ed.)L'Esperance, Wilford L. Modern Statistics for Business and Economics. New York: Macmillan, 1971.
Tohutoro MLA (9th ed.)L'Esperance, Wilford L. Modern Statistics for Business and Economics. Macmillan, 1971.
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