Johnsonbaugh, R. (2005). Discrete mathematics. New Jersey: Pearson Prentice Hall.
Dyfyniad Arddull ChicagoJohnsonbaugh, Richard. Discrete Mathematics. New Jersey: Pearson Prentice Hall, 2005.
Dyfyniad MLAJohnsonbaugh, Richard. Discrete Mathematics. New Jersey: Pearson Prentice Hall, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.