Walker, E. (1981). Doors to more mature reading (2nd ed.). American Library Association.
Čikaški stil citiranja (17. izdanje)Walker, Elinor. Doors to More Mature Reading. 2nd ed. Chicago: American Library Association, 1981.
MLA način citiranja (9. izdanje)Walker, Elinor. Doors to More Mature Reading. 2nd ed. American Library Association, 1981.
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