Dyfyniad APA

Gordon, R., & Williams, B. (2012). Spiral (1st American ed.). Chicken House/Scholastic.

Dyfyniad Arddull Chicago

Gordon, Roderick, and Brian Williams. Spiral. 1st American ed. New York: Chicken House/Scholastic, 2012.

Dyfyniad MLA

Gordon, Roderick, and Brian Williams. Spiral. 1st American ed. Chicken House/Scholastic, 2012.

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