APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

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