Walker, E. (1981). Doors to more mature reading: Detailed notes on adult books for use with young people (2nd ed.). American Library Association.
Citazione stile Chigago Style (17a edizione)Walker, Elinor. Doors to More Mature Reading: Detailed Notes on Adult Books for Use with Young People. 2nd ed. Chicago: American Library Association, 1981.
Citatione MLA (9a ed.)Walker, Elinor. Doors to More Mature Reading: Detailed Notes on Adult Books for Use with Young People. 2nd ed. American Library Association, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.