APA aipamena

Gruber, H. (1967). International communism in the era of Lenin. New York: Fawcett Publications, Inc.

Chicago Style aipamena

Gruber, Helmut. International Communism in the Era of Lenin. New York: Fawcett Publications, Inc, 1967.

MLA aipamena

Gruber, Helmut. International Communism in the Era of Lenin. New York: Fawcett Publications, Inc, 1967.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.