Fleming, C. (2002). The ratio handbook (2nd ed.). Routledge.
Dyfyniad Arddull ChicagoFleming, Carole. The Ratio Handbook. 2nd ed. New York: Routledge, 2002.
Dyfyniad MLAFleming, Carole. The Ratio Handbook. 2nd ed. Routledge, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.