APA (7th ed.) Zitazioa
African Association of science. (1990). Directory of scholarly journals published in Africa: A preliminary survey. Academy Science.
Chicago Style (17th ed.) Zitazioa
African Association of science. Directory of Scholarly Journals Published in Africa: A Preliminary Survey. Nairobi: Academy Science, 1990.
MLA (9th ed.) Zitazioa
African Association of science. Directory of Scholarly Journals Published in Africa: A Preliminary Survey. Academy Science, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.