Cita APA (7a ed.)

Caldwell, J. C., & Caldwell, E. F. (1972). Our neighbors in Africa (3. impr.). Day.

Cita Chicago Style (17a ed.)

Caldwell, John C., y Elsie F. Caldwell. Our Neighbors in Africa. 3. impr. New York: Day, 1972.

Cita MLA (9a ed.)

Caldwell, John C., y Elsie F. Caldwell. Our Neighbors in Africa. 3. impr. Day, 1972.