Geary, D. C. 1. (1994). Children's mathematical development: Research and practical applications (1. ed.). American Psychological Assoc.
Chicago-Zitierstil (17. Ausg.)Geary, David C. 19XX-. Children's Mathematical Development: Research and Practical Applications. 1. ed. Washington, DC: American Psychological Assoc, 1994.
MLA-Zitierstil (9. Ausg.)Geary, David C. 19XX-. Children's Mathematical Development: Research and Practical Applications. 1. ed. American Psychological Assoc, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.