APA (7th ed.) Citation

Kordas, A., Lynch, R. J., & Nelson, B. World History. OpenStax.

Chicago Style (17th ed.) Citation

Kordas, Ann, Ryan J. Lynch, and Brooke Nelson. World History. [Place of publication not identified]: OpenStax.

MLA (9th ed.) Citation

Kordas, Ann, et al. World History. OpenStax.

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