Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.