APA (7th ed.) Zitazioa
Okombo Okoth. (1990). A student's guide to writing and study skills. Nairobi University Press.
Chicago Style (17th ed.) Zitazioa
Okombo Okoth. A Student's Guide to Writing and Study Skills. Kenya: Nairobi University Press, 1990.
MLA (9th ed.) Zitazioa
Okombo Okoth. A Student's Guide to Writing and Study Skills. Nairobi University Press, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.