Axelrod, R. B., & Cooper, C. R. (1991). The St. Martin's guide to writing (3rd ed.). New York: St. Martin's Press.
Dyfyniad Arddull ChicagoAxelrod, Rise B., và Charles Raymond Cooper. The St. Martin's Guide to Writing. 3rd ed. New York: St. Martin's Press, 1991.
Dyfyniad MLAAxelrod, Rise B., và Charles Raymond Cooper. The St. Martin's Guide to Writing. 3rd ed. New York: St. Martin's Press, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.