Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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