APA استشهاد

Landis, J. R. (1974). Sociology: Concepts and characteristics (2d ed.). Wadsworth Pub. Co.

استشهاد بنمط شيكاغو

Landis, Judson R. Sociology: Concepts and Characteristics. 2d ed. Belmont, Calif.: Wadsworth Pub. Co, 1974.

MLA استشهاد

Landis, Judson R. Sociology: Concepts and Characteristics. 2d ed. Wadsworth Pub. Co, 1974.