Cita APA (7a ed.)

Friedl, A. E., & Koontz, T. Y. (2005). Teaching science to children: An inquiry approach (6th ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Friedl, Alfred E., y Trish Yourst Koontz. Teaching Science to Children: An Inquiry Approach. 6th ed. Boston [etc.]: McGraw-Hill, 2005.

Cita MLA (9a ed.)

Friedl, Alfred E., y Trish Yourst Koontz. Teaching Science to Children: An Inquiry Approach. 6th ed. McGraw-Hill, 2005.