APA (7th ed.) Zitazioa

Engel, B. A. (2015). Russian in world history. Univ., pr..

Chicago Style (17th ed.) Zitazioa

Engel, Barbara Alpern. Russian in World History. Oxford: Univ., pr., 2015.

MLA (9th ed.) Zitazioa

Engel, Barbara Alpern. Russian in World History. Univ., pr., 2015.