Robertson, I. (1987). Sociology (3rd ed.). Worth publishers.
Cita Chicago Style (17a ed.)Robertson, Ian. Sociology. 3rd ed. New York: Worth publishers, 1987.
Cita MLA (9a ed.)Robertson, Ian. Sociology. 3rd ed. Worth publishers, 1987.
Precaución: Estas citas no son 100% exactas.