Citazione Stile APA (7a Edizione)

Udo, R. K. (1982). A comprehensive geography of West Africa (Reprinted.). Heinemann Educational Books.

Citazione stile Chigago Style (17a edizione)

Udo, Reuben Kenrick. A Comprehensive Geography of West Africa. Reprinted. Ibadan: Heinemann Educational Books, 1982.

Citatione MLA (9a ed.)

Udo, Reuben Kenrick. A Comprehensive Geography of West Africa. Reprinted. Heinemann Educational Books, 1982.