APA aipamena

Friedl, A. E. (1991). Teaching science to children: An integrated approach (2nd ed.). McGraw-Hill.

Chicago Style aipamena

Friedl, Alfred E. Teaching Science to Children: An Integrated Approach. 2nd ed. New York: McGraw-Hill, 1991.

MLA aipamena

Friedl, Alfred E. Teaching Science to Children: An Integrated Approach. 2nd ed. McGraw-Hill, 1991.