Cita APA (7th ed.)

Gruber, H. 1. (1967). International communism in the era of Lenin ; a documentary history. Cornell University Press.

Cita Chicago (17th ed.)

Gruber, Helmut 1928. International Communism in the Era of Lenin ; a Documentary History. Ithaca, N. Y: Cornell University Press, 1967.

Cita MLA (9th ed.)

Gruber, Helmut 1928. International Communism in the Era of Lenin ; a Documentary History. Cornell University Press, 1967.