Cita APA (7a ed.)

Gadd, K. M., & Firth, C. B. (1964). From Ur to Rome (Revised ed., 20. impression.). Ginn.

Cita Chicago Style (17a ed.)

Gadd, K. M., y Catherine B. Firth. From Ur to Rome. Revised ed., 20. impression. London: Ginn, 1964.

Cita MLA (9a ed.)

Gadd, K. M., y Catherine B. Firth. From Ur to Rome. Revised ed., 20. impression. Ginn, 1964.