Hein, M. (1986). Foundations of College Chemistry (6th ed.). Brooks/Cole Publishing Company.
Cita Chicago (17th ed.)Hein, Morris. Foundations of College Chemistry. 6th ed. Monterey, CA: Brooks/Cole Publishing Company, 1986.
Cita MLA (9th ed.)Hein, Morris. Foundations of College Chemistry. 6th ed. Brooks/Cole Publishing Company, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.