APA (7th ed.) Citation

Holt, S., & O'Connor, J. R. (1987). Exploring world history: A global approach. Globe Book.

Chicago Style (17th ed.) Citation

Holt, Sol, and John R. O'Connor. Exploring World History: A Global Approach. New York [u.a.]: Globe Book, 1987.

MLA (9th ed.) Citation

Holt, Sol, and John R. O'Connor. Exploring World History: A Global Approach. Globe Book, 1987.