APA-Zitierstil (7. Ausg.)

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

Chicago-Zitierstil (17. Ausg.)

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

MLA-Zitierstil (9. Ausg.)

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