Tohutoro APA (7th ed.)
Johnson, R. (1992). Elementary statistics (6th ed.). Duxbury.
Tohutoru Kātū Chicago (17th ed.)
Johnson, Robert. Elementary Statistics. 6th ed. Belmont: Duxbury, 1992.
Tohutoro MLA (9th ed.)
Johnson, Robert. Elementary Statistics. 6th ed. Duxbury, 1992.
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