Hill, J. W., Kolb, D. K., & Hill, C. S. (1998). Chemistry for changing times (8th ed.). Prentice Hall.
Cita Chicago (17th ed.)Hill, John William, Doris K. Kolb, i Cynthia S. Hill. Chemistry for Changing Times. 8th ed. Upper Saddle River, NJ: Prentice Hall, 1998.
Cita MLA (8th ed.)Hill, John William, et al. Chemistry for Changing Times. 8th ed. Prentice Hall, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.