Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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