Cita APA (7th ed.)

Adams, W. E., & Barlow, R. B. (1968). The Western world. Harper & Row.

Cita Chicago (17th ed.)

Adams, Wallace E., i Richard B. Barlow. The Western World. New York: Harper & Row, 1968.

Cita MLA (9th ed.)

Adams, Wallace E., i Richard B. Barlow. The Western World. Harper & Row, 1968.