Citazione Stile APA (7a Edizione)

Carin, A. A., & Sund, R. B. (1989). Guided discovery activities for elementary school science (2nd ed.). Merrill.

Citazione stile Chigago Style (17a edizione)

Carin, Arthur A., e Robert B. Sund. Guided Discovery Activities for Elementary School Science. 2nd ed. Columbus, Ohio: Merrill, 1989.

Citatione MLA (9a ed.)

Carin, Arthur A., e Robert B. Sund. Guided Discovery Activities for Elementary School Science. 2nd ed. Merrill, 1989.