Drooyan, I., & Wooton, W. (1976). Elementary algebra for college students (4th ed.). Wiley.
Dyfyniad Arddull ChicagoDrooyan, Irving, and William Wooton. Elementary Algebra for College Students. 4th ed. New York: Wiley, 1976.
Dyfyniad MLADrooyan, Irving, and William Wooton. Elementary Algebra for College Students. 4th ed. Wiley, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.