Gaya APA

Montessori, M. (1972). The discovery of the child. Translated by M. Joseph Costelloe. : La scoperta del bambino. 1962 . New York: New York Ballantine Books.

Gaya MLA

Montessori, Maria. "The discovery of the child. Translated by M. Joseph Costelloe. : La scoperta del bambino. 1962 ". New York: New York Ballantine Books, 1972. Buku.