Robertson, I. (1981). Sociology (2nd ed.). Worth Publishers.
Chicago-čujuhus (17. p.)Robertson, Ian. Sociology. 2nd ed. New York: Worth Publishers, 1981.
MLA-čujuhus (9. p.)Robertson, Ian. Sociology. 2nd ed. Worth Publishers, 1981.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.