APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Ward-Perkins, John B. Roman Imperial Architecture. 2. (integrated) ed. Harmondsworth, Middlesex: Penguin Books, 1981.

MLA (9th ed.) Citation

Ward-Perkins, John B. Roman Imperial Architecture. 2. (integrated) ed. Penguin Books, 1981.