Robertson, I. (1981). Sociology (2nd ed.). Worth Publishers.
Cita Chicago Style (17a ed.)Robertson, Ian. Sociology. 2nd ed. New York: Worth Publishers, 1981.
Cita MLA (9a ed.)Robertson, Ian. Sociology. 2nd ed. Worth Publishers, 1981.
Precaución: Estas citas no son 100% exactas.