Citazione Stile APA (7a Edizione)

Gega, P. C. (1970). Science in elementary education (2d ed.). J. Wiley.

Citazione stile Chigago Style (17a edizione)

Gega, Peter C. Science in Elementary Education. 2d ed. New York: J. Wiley, 1970.

Citatione MLA (8a ed.)

Gega, Peter C. Science in Elementary Education. 2d ed. J. Wiley, 1970.