Cita APA (7a ed.)

Udo, R. K. (1983). The human geography of tropical Africa (Reprinted.). Heinemann.

Cita Chicago Style (17a ed.)

Udo, Reuben Kenrick. The Human Geography of Tropical Africa. Reprinted. Ibadan [u.a.]: Heinemann, 1983.

Cita MLA (9a ed.)

Udo, Reuben Kenrick. The Human Geography of Tropical Africa. Reprinted. Heinemann, 1983.