Cita APA (7a ed.)

Gumplowicz, L. (1999). The Outlines of sociology. Batoche.

Cita Chicago Style (17a ed.)

Gumplowicz, Ludwig. The Outlines of Sociology. Kitchener, Ont.: Batoche, 1999.

Cita MLA (8a ed.)

Gumplowicz, Ludwig. The Outlines of Sociology. Batoche, 1999.