APA

Boucke O. F., . (1920). The limits of socialism. New York: Macmillan.

Chicago

Boucke Oswald Fred, . 1920. The limits of socialism. New York: Macmillan.

Harvard

Boucke O. F., . (1920). The limits of socialism. New York: Macmillan.

MLA

Boucke Oswald Fred, . The limits of socialism. New York: Macmillan. 1920.