Cita APA

Hepler, L. G., & Smith, W. L. (1975). Principles of chemistry. New York: Macmillan Publishing co..

Citación estilo Chicago

Hepler, Loren G., y Wayne L. Smith. Principles of Chemistry. New York: Macmillan Publishing co., 1975.

Cita MLA

Hepler, Loren G., y Wayne L. Smith. Principles of Chemistry. New York: Macmillan Publishing co., 1975.