APA (7th ed.) Citation

(2009). Africans of the Ghana, Mali, and Songhai empires. World Book Inc.

Chicago Style (17th ed.) Citation

Africans of the Ghana, Mali, and Songhai Empires. Chicago: World Book Inc, 2009.

MLA (9th ed.) Citation

Africans of the Ghana, Mali, and Songhai Empires. World Book Inc, 2009.

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