APA

johnsonbaugh R., .Discrete Mathematics. NEW JERSEY:Prentic hall,2009: .

Chicago

johnsonbaugh Richard, .Discrete Mathematics. NEW JERSEY:Prentic hall,2009: .

Harvard

johnsonbaugh R., .Discrete Mathematics. NEW JERSEY:Prentic hall,2009: .

MLA

johnsonbaugh Richard, .NEW JERSEY:Prentic hall,2009: . .