(2002). Statistics, measures, and quality standards for assessing digital reference library services: Guidelines and procedures / Charles R. McClure, R. David Lankes, Melissa Gross, Beverly Choltco-Devlin.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Statistics, Measures, and Quality Standards for Assessing Digital Reference Library Services: Guidelines and Procedures / Charles R. McClure, R. David Lankes, Melissa Gross, Beverly Choltco-Devlin. 2002.
MLA -ийн эшлэл (9 дэх хэвлэлт)Statistics, Measures, and Quality Standards for Assessing Digital Reference Library Services: Guidelines and Procedures / Charles R. McClure, R. David Lankes, Melissa Gross, Beverly Choltco-Devlin. 2002.
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