Walmsley, S. A. (1994). Children exploring their world: Theme teaching in elementary school. Heinemann.
Chicago-Zitierstil (17. Ausg.)Walmsley, Sean A. Children Exploring Their World: Theme Teaching in Elementary School. Portsmouth, NH: Heinemann, 1994.
MLA-Zitierstil (9. Ausg.)Walmsley, Sean A. Children Exploring Their World: Theme Teaching in Elementary School. Heinemann, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.