Dyfyniad APA

Hacker, D. (1995). A writer's reference (3rd ed.). Boston: Bedford Books of St. Martin's Press.

Dyfyniad Arddull Chicago

Hacker, Diana. A Writer's Reference. 3rd ed. Boston: Bedford Books of St. Martin's Press, 1995.

Dyfyniad MLA

Hacker, Diana. A Writer's Reference. 3rd ed. Boston: Bedford Books of St. Martin's Press, 1995.

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