APA (7th ed.) Citation

Helm, J. H., & Katz, L. G. (2011). Young investigators: The project approach in the early years (2nd ed.). Teachers College Press.

Chicago Style (17th ed.) Citation

Helm, Judy Harris, and Lilian G. Katz. Young Investigators: The Project Approach in the Early Years. 2nd ed. New York: Teachers College Press, 2011.

MLA (9th ed.) Citation

Helm, Judy Harris, and Lilian G. Katz. Young Investigators: The Project Approach in the Early Years. 2nd ed. Teachers College Press, 2011.