"Young Adult Literature, typically regarded as REALISTIC FICTION for readers aged twelve through eighteen, is an American contribution to world literature that emerged during the 1940s when adolescence—the period between childhood and early adulthood—came to be regarded as a separate stage of human development."
Text: Cart, Michael. "Young Adult Literature." Continuum Encyclopedia of Children's Literature, edited by Bernice E. Cullinan, and Diane Goetz Person, Continuum, 1st edition, 2005. Credo Reference, http://sc4.idm.oclc.org/login?qurl=https://search.credoreference.com/content/topic/young_adult_literature?institutionId=5065. Accessed 13 Apr. 2018.