Formanek, R., & Gurian, A. (1980). Why? children's questions: What they mean and how to answer them. Houghton Mifflin.
Chicago-Zitierstil (17. Ausg.)Formanek, Ruth, und Anita Gurian. Why? Children's Questions: What They Mean and How to Answer Them. Boston: Houghton Mifflin, 1980.
MLA-Zitierstil (9. Ausg.)Formanek, Ruth, und Anita Gurian. Why? Children's Questions: What They Mean and How to Answer Them. Houghton Mifflin, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.