APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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