Payne, M. N. (1977). Pre-calculus mathematics. Saunders.
Cita Chicago (17th ed.)Payne, Michael N. Pre-calculus Mathematics. Philadelphia: Saunders, 1977.
Cita MLA (8th ed.)Payne, Michael N. Pre-calculus Mathematics. Saunders, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.