APA-Zitierstil (7. Ausg.)

Gelman, R. (1978). The child's understanding of number. Harvard University Press.

Chicago-Zitierstil (17. Ausg.)

Gelman, Rochel. The Child's Understanding of Number. Cambridge, MA: Harvard University Press, 1978.

MLA-Zitierstil (9. Ausg.)

Gelman, Rochel. The Child's Understanding of Number. Harvard University Press, 1978.