Hamilton, B. A., & Brown, E. R. (1973). Libraries and information centers in the Chicago metropolitan area. Illinois Regional Library Council.
Chicago-viite (17. p.)Hamilton, Beth A., ja Eva R. Brown. Libraries and Information Centers in the Chicago Metropolitan Area. Hinsdale: Illinois Regional Library Council, 1973.
MLA-viite (8. p.)Hamilton, Beth A., ja Eva R. Brown. Libraries and Information Centers in the Chicago Metropolitan Area. Illinois Regional Library Council, 1973.
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