Wheldon, H. J. (1968). Wheldon's business statistics and: Statistical methods (6th ed.). Macdonald.
Citace podle Chicago (17th ed.)Wheldon, H. J. Wheldon's Business Statistics and: Statistical Methods. 6th ed. London: Macdonald, 1968.
Citace podle MLA (9th ed.)Wheldon, H. J. Wheldon's Business Statistics and: Statistical Methods. 6th ed. Macdonald, 1968.
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