APA (7th ed.) Citation

Hurd, P. D., & Gallagher, J. J. (1968). New directions in elementary science teaching. Wadsworth.

Chicago Style (17th ed.) Citation

Hurd, Paul Dehart, and James J. Gallagher. New Directions in Elementary Science Teaching. Balmont, CA: Wadsworth, 1968.

MLA (9th ed.) Citation

Hurd, Paul Dehart, and James J. Gallagher. New Directions in Elementary Science Teaching. Wadsworth, 1968.