Ward-Perkins, J. B. (1981). Roman imperial architecture (2nd ed.). Penguin Books.
芝加哥风格引文Ward-Perkins, John Bryan. Roman Imperial Architecture. 2nd ed. Harmondsworth, Middlesex, Eng: Penguin Books, 1981.
MLA引文Ward-Perkins, John Bryan. Roman Imperial Architecture. 2nd ed. Penguin Books, 1981.
警告：这些引文格式不一定是100％准确.