Zumdahl, S. S. (1997). Chemistry (4th ed.). D. C. Heath and Company.
Cita Chicago (17th ed.)Zumdahl, Steven S. Chemistry. 4th ed. Lexington, Mass.: D. C. Heath and Company, 1997.
Cita MLA (9th ed.)Zumdahl, Steven S. Chemistry. 4th ed. D. C. Heath and Company, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.