APA-Zitierstil (7. Ausg.)

(1947). Four- and five-year-olds at school (3. print.).

Chicago-Zitierstil (17. Ausg.)

Four- and Five-year-olds at School. 3. print. Washington, D.C, 1947.

MLA-Zitierstil (9. Ausg.)

Four- and Five-year-olds at School. 3. print. 1947.