Albers, D. J., Rodi, S. B., & Watkins, A. E. (1985). New directions in two-year college mathematics. Springer-Verlag.
Cita Chicago (17th ed.)Albers, Donald J., Stophen B. Rodi, i Ann E. Watkins. New Directions in Two-year College Mathematics. Nueva York: Springer-Verlag, 1985.
Cita MLA (9th ed.)Albers, Donald J., et al. New Directions in Two-year College Mathematics. Springer-Verlag, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.