Hungerford, T. W. (2000). Contemporary precalculus: A graphing approach (3rd ed.). Saunders College Pub.
Citazione stile Chigago Style (17a edizione)Hungerford, Thomas W. Contemporary Precalculus: A Graphing Approach. 3rd ed. Philadelphia: Saunders College Pub, 2000.
Citatione MLA (9a ed.)Hungerford, Thomas W. Contemporary Precalculus: A Graphing Approach. 3rd ed. Saunders College Pub, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.