APA

Montessori M., Costelloe M. J. (., .The discovery of the child. New York: .

Chicago

Montessori Maria, Costelloe M Joseph (tr.), .The discovery of the child. New York: .

Harvard

Montessori M., Costelloe M. J. (., .The discovery of the child. New York: .

MLA

Montessori Maria, Costelloe M Joseph (tr.), .New York: . .