Whipkey, K. L., & Whipkey, M. N. (1972). The power of calculus. John Wiley and Sons.
Cita Chicago (17th ed.)Whipkey, Kenneth L., i Mary Nell Whipkey. The Power of Calculus. Nueva York: John Wiley and Sons, 1972.
Cita MLA (9th ed.)Whipkey, Kenneth L., i Mary Nell Whipkey. The Power of Calculus. John Wiley and Sons, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.