Cita APA (7a ed.)

Tracy, G. R., Friedl, A. E., & Trapp, H. E. (1979). Modern physical science. Holt.

Cita Chicago Style (17a ed.)

Tracy, George R., Alfred E. Friedl, y Harry E. Trapp. Modern Physical Science. New York: Holt, 1979.

Cita MLA (9a ed.)

Tracy, George R., et al. Modern Physical Science. Holt, 1979.