APA-referens (7:e uppl.)

Spencer, M. (1982). Foundations of modern sociology (3rd ed.). Prentice-Hall.

Chicago-referens (17:e uppl.)

Spencer, Metta. Foundations of Modern Sociology. 3rd ed. Englewood Cliffs, N. J: Prentice-Hall, 1982.

MLA-referens (9:e uppl.)

Spencer, Metta. Foundations of Modern Sociology. 3rd ed. Prentice-Hall, 1982.