Παραπομπή APA

Montessori, M., & Costelloe, M. J. (1972). Discovery of the child. Random House.

Παραπομπή Chicago Style

Montessori, Maria, και M. Joseph Costelloe. Discovery of the Child. New York: Random House, 1972.

Παραπομπή MLA

Montessori, Maria, και M. Joseph Costelloe. Discovery of the Child. Random House, 1972.