Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

Schulze, Willi. A New Geography of Liberia. Longman group, 1973.