Cita APA (7th ed.)

Adler, P. J., & Pouwels, R. L. (2018). World civilizations (Eighth edition.). Cengage Learning.

Cita Chicago (17th ed.)

Adler, Philip J., i Randall Lee Pouwels. World Civilizations. Eighth edition. Australia: Cengage Learning, 2018.

Cita MLA (9th ed.)

Adler, Philip J., i Randall Lee Pouwels. World Civilizations. Eighth edition. Cengage Learning, 2018.