Citazione Stile APA (7a Edizione)

Holt, S., & O'Connor, J. R. (1983). Exploring world history: A global approach. Globe Book.

Citazione stile Chigago Style (17a edizione)

Holt, Sol, e John R. O'Connor. Exploring World History: A Global Approach. New York [u.a.]: Globe Book, 1983.

Citatione MLA (9a ed.)

Holt, Sol, e John R. O'Connor. Exploring World History: A Global Approach. Globe Book, 1983.