Katkov, G., Oberländer, E., Poppe, N., & von Rauch, G. (1973). Russia enters the twenthieth century. London: Methuen.
芝加哥风格引文Katkov, George, Erwin Oberländer, Nikolaus Poppe, 与 Georg von Rauch. Russia Enters the Twenthieth Century. London: Methuen, 1973.
MLA引文Katkov, George, et al. Russia Enters the Twenthieth Century. London: Methuen, 1973.
警告：这些引文格式不一定是100％准确.