Morris, L. R. (1979). A Comparison of Cost Factors Used by OCLC Service Centers.
Citazione stile Chigago Style (17a edizione)Morris, Leslie R. A Comparison of Cost Factors Used by OCLC Service Centers. 1979.
Citatione MLA (9a ed.)Morris, Leslie R. A Comparison of Cost Factors Used by OCLC Service Centers. 1979.
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