APA aipamena

Walling, W. E. (1912). A survey of the world-wide revolutionary movement. New York: The MacMillan Company.

Chicago Style aipamena

Walling, William English. A Survey of the World-wide Revolutionary Movement. New York: The MacMillan Company, 1912.

MLA aipamena

Walling, William English. A Survey of the World-wide Revolutionary Movement. New York: The MacMillan Company, 1912.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.