Cita APA (7th ed.)

Hansen, V., & Curtis, K. R. (2010). Voyages in world history (Instructor's edition.). Wadsworth/Cengage Learning.

Cita Chicago (17th ed.)

Hansen, Valerie, i Kenneth Robert Curtis. Voyages in World History. Instructor's edition. Australia: Wadsworth/Cengage Learning, 2010.

Cita MLA (9th ed.)

Hansen, Valerie, i Kenneth Robert Curtis. Voyages in World History. Instructor's edition. Wadsworth/Cengage Learning, 2010.