Onyango, J. P., & Plews, A. M. (1987). A textbook of basic statistics. East African educational publishers..
Čikaški stil citiranja (17. izdanje)Onyango, John P., i A. M. Plews. A Textbook of Basic Statistics. Nairobi: East African educational publishers., 1987.
MLA način citiranja (9. izdanje)Onyango, John P., i A. M. Plews. A Textbook of Basic Statistics. East African educational publishers., 1987.
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