Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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