Citazione Stile APA (7a Edizione)

Gumplowicz, L., & Horowitz, I. L. (1963). Outlines of sociology ([2nd English language ed.].). Paine-Whitman.

Citazione stile Chigago Style (17a edizione)

Gumplowicz, Ludwig, e Irving Louis Horowitz. Outlines of Sociology. [2nd English language ed.]. New York: Paine-Whitman, 1963.

Citatione MLA (9a ed.)

Gumplowicz, Ludwig, e Irving Louis Horowitz. Outlines of Sociology. [2nd English language ed.]. Paine-Whitman, 1963.