Keller, F. J., & Skove, M. J. (1993). Physics: Classical and modern (2nd ed.). McGraw-Hill.
Cita Chicago (17th ed.)Keller, Frederick J., i Malcolm J. Skove. Physics: Classical and Modern. 2nd ed. New York: McGraw-Hill, 1993.
Cita MLA (9th ed.)Keller, Frederick J., i Malcolm J. Skove. Physics: Classical and Modern. 2nd ed. McGraw-Hill, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.