Cita APA (7th ed.)

Ward-Perkins, J. B. (1981). Roman imperial architecture (2nd ed.). Penguin Books.

Cita Chicago (17th ed.)

Ward-Perkins, John Bryan. Roman Imperial Architecture. 2nd ed. Harmondsworth, Middlesex, Eng: Penguin Books, 1981.

Cita MLA (9th ed.)

Ward-Perkins, John Bryan. Roman Imperial Architecture. 2nd ed. Penguin Books, 1981.