Johnsonbaugh, R. (1993). Discrete mathematics (3rd ed.). Macmillan.
Dyfyniad Arddull ChicagoJohnsonbaugh, Richard. Discrete Mathematics. 3rd ed. New York: Macmillan, 1993.
Dyfyniad MLAJohnsonbaugh, Richard. Discrete Mathematics. 3rd ed. Macmillan, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.