APA (7th ed.) Citation

Wolfe, B. D., & Stevens, L. C. (1959). Sechs Schlüssel zum Sowjet-System.

Chicago Style (17th ed.) Citation

Wolfe, Bertram D., and Leslie C. Stevens. Sechs Schlüssel Zum Sowjet-System. 1959.

MLA (8th ed.) Citation

Wolfe, Bertram D., and Leslie C. Stevens. Sechs Schlüssel Zum Sowjet-System. 1959.

Warning: These citations may not always be 100% accurate.