APA (7th ed.) Citation

Zaide, G. F., & Zaide, G. M. (1983). World history: A chronological approach. National Book Store.

Chicago Style (17th ed.) Citation

Zaide, Gregorio F., and Gregorio M. Zaide. World History: A Chronological Approach. Metro Manila: National Book Store, 1983.

MLA (9th ed.) Citation

Zaide, Gregorio F., and Gregorio M. Zaide. World History: A Chronological Approach. National Book Store, 1983.