Cita APA (7a ed.)

Springer, J. M. (1909). The heart of central Africa: Mineral wealth and missionary opportunity. Methodist Book Concern.

Cita Chicago Style (17a ed.)

Springer, John McKendree. The Heart of Central Africa: Mineral Wealth and Missionary Opportunity. New York: Methodist Book Concern, 1909.

Cita MLA (8a ed.)

Springer, John McKendree. The Heart of Central Africa: Mineral Wealth and Missionary Opportunity. Methodist Book Concern, 1909.