APA-referens

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

Chicago-stil citat

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

MLA-referens

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