APA (7th ed.) Citation

Ward-Perkins, J. B. (1989). Roman imperial architecture (Repr.). Penguin Books.

Chicago Style (17th ed.) Citation

Ward-Perkins, John B. Roman Imperial Architecture. Repr. Harmondsworth: Penguin Books, 1989.

MLA (9th ed.) Citation

Ward-Perkins, John B. Roman Imperial Architecture. Repr. Penguin Books, 1989.

Warning: These citations may not always be 100% accurate.