Johnsonbaugh, R. (1997). Discrete mathematics (4th ed.). Prentice Hall International.
Lua i Stíl Chicago (17ú heag.)Johnsonbaugh, Richard. Discrete Mathematics. 4th ed. Upper Saddle River, New Jersey: Prentice Hall International, 1997.
Lua MLA (9ú heag.)Johnsonbaugh, Richard. Discrete Mathematics. 4th ed. Prentice Hall International, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.