Kirk, R. E. (1999). Statistics: An introduction. Harcourt Brace College.
Tohutoru Kātū Chicago (17th ed.)Kirk, Roger E. Statistics: An Introduction. Fortworth: Harcourt Brace College, 1999.
Tohutoro MLA (9th ed.)Kirk, Roger E. Statistics: An Introduction. Harcourt Brace College, 1999.
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