Ayres, F. (1972). Calculus 2nd ed. McGraw Hill.
Cita Chicago (17th ed.)Ayres, Frank. Calculus 2nd Ed. New York: McGraw Hill, 1972.
Cita MLA (9th ed.)Ayres, Frank. Calculus 2nd Ed. McGraw Hill, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.