Dyfyniad APA

Schaefer, R. T., & Lamm, R. P. (1992). Sociology (4th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Schaefer, Richard T., and Robert P. Lamm. Sociology. 4th ed. New York: McGraw-Hill, 1992.

Dyfyniad MLA

Schaefer, Richard T., and Robert P. Lamm. Sociology. 4th ed. McGraw-Hill, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.