APA (7th ed.) Zitazioa
ebrary, Inc, & Columbus, A. (2011). Politics and economics of Africa. Nova Science Publishers, Inc..
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Alexandra Columbus. Politics and Economics of Africa. New York: Nova Science Publishers, Inc., 2011.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Alexandra Columbus. Politics and Economics of Africa. Nova Science Publishers, Inc., 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.