Cita APA (7a ed.)

Schulze, W. (1973). A new geography of Liberia (1. publ.). Longman.

Cita Chicago Style (17a ed.)

Schulze, Willi. A New Geography of Liberia. 1. publ. London: Longman, 1973.

Cita MLA (9a ed.)

Schulze, Willi. A New Geography of Liberia. 1. publ. Longman, 1973.