APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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