APA ציטוט

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

Chicago Style (17th ed.) Citation

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

ציטוט MLA

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