Cita APA (7th ed.)

Friedl, A. E. (2001). Teaching science to children: An inquiry approach (5th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Friedl, Alfred E. Teaching Science to Children: An Inquiry Approach. 5th ed. Boston: McGraw-Hill, 2001.

Cita MLA (9th ed.)

Friedl, Alfred E. Teaching Science to Children: An Inquiry Approach. 5th ed. McGraw-Hill, 2001.