Dyfyniad APA
Kornblum, W., Julian, J., & Smith, C. D. (1989). Social Problems (6th ed.). Prentice Hall.
Dyfyniad Arddull Chicago
Kornblum, William, Joseph Julian, and Carolyn D. Smith. Social Problems. 6th ed. New Jersey: Prentice Hall, 1989.
Dyfyniad MLA
Kornblum, William, et al. Social Problems. 6th ed. Prentice Hall, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.