Cita APA (7a ed.)

Montessori, M. (1972). The discovery of the child. Ballantine Books.

Cita Chicago Style (17a ed.)

Montessori, Maria. The Discovery of the Child. New York: Ballantine Books, 1972.

Cita MLA (8a ed.)

Montessori, Maria. The Discovery of the Child. Ballantine Books, 1972.