APA (7th ed.) Citation

Katkov, G., Oberländer, E., Poppe, N., & von Rauch, G. (1973). Russia enters the twenthieth century. London: Methuen.

Chicago Style (17th ed.) Citation

Katkov, George, Erwin Oberländer, Nikolaus Poppe, and Georg von Rauch. Russia Enters the Twenthieth Century. London: Methuen, 1973.

MLA (8th ed.) Citation

Katkov, George, et al. Russia Enters the Twenthieth Century. London: Methuen, 1973.