Cita APA (7th ed.)

Onyango, J. P., & Plews, A. M. (1987). A textbook of basic statistics. East African educational publishers..

Cita Chicago (17th ed.)

Onyango, John P., i A. M. Plews. A Textbook of Basic Statistics. Nairobi: East African educational publishers., 1987.

Cita MLA (9th ed.)

Onyango, John P., i A. M. Plews. A Textbook of Basic Statistics. East African educational publishers., 1987.