Schenk, G. (1954). County and regional library development. American Library Association.
Čikaški stil citiranja (17. izdanje)Schenk, Gretchen. County and Regional Library Development. Chicago: American Library Association, 1954.
MLA način citiranja (9. izdanje)Schenk, Gretchen. County and Regional Library Development. American Library Association, 1954.
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