APA (7th ed.) Citation

Key, E., & Franzos, M. (1972). The century of the child. Arno Press.

Chicago Style (17th ed.) Citation

Key, Ellen, and Marie Franzos. The Century of the Child. New York: Arno Press, 1972.

MLA (9th ed.) Citation

Key, Ellen, and Marie Franzos. The Century of the Child. Arno Press, 1972.