APA (7th ed.) Citation

Schweinfurth, G., & Frewer, E. E. (1874). The heart of Africa. Harper & brothers.

Chicago Style (17th ed.) Citation

Schweinfurth, Georg, and Ellen Elizabeth Frewer. The Heart of Africa. New York: Harper & brothers, 1874.

MLA (9th ed.) Citation

Schweinfurth, Georg, and Ellen Elizabeth Frewer. The Heart of Africa. Harper & brothers, 1874.

Warning: These citations may not always be 100% accurate.