Wheeler, H. (1971). Democracy in a revolutionary era: The political order today. Penguin.
芝加哥风格引文Wheeler, Harvey. Democracy in a Revolutionary Era: The Political Order Today. Harmondsworth: Penguin, 1971.
MLA引文Wheeler, Harvey. Democracy in a Revolutionary Era: The Political Order Today. Penguin, 1971.
警告：这些引文格式不一定是100％准确.