APA (7th ed.) Citation

Nachtigal, G. (1971). Sahara and Sudan. Barnes & Noble.

Chicago Style (17th ed.) Citation

Nachtigal, Gustav. Sahara and Sudan. New York: Barnes & Noble, 1971.

MLA (8th ed.) Citation

Nachtigal, Gustav. Sahara and Sudan. Barnes & Noble, 1971.

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