1Marilyn Domas White. Digital reference services : framework for analysis and evaluation. Library & Information Science Research,2001, 23(3) :211 -213.
2Charles R. McClure, et al. Statistics, measure, and quality standards for assessing digital reference library services: guidelines and procedures. [ 2003 - 10 - 20 ]. http ://quartz. syr. edu/quality/Field_Test_Draft. pdf.
3Table 2 : user - based evaluation criteria of the ask ERIC Q&A service (N = 58 ). E 2003 - 10 - 12 1- http://www. vrd. org/conferences/VRD2OOO/proeeedings/Miwa - Table2. htm.
4Charles R. McClure. Assessing quality in digital reference services : a research prospectus. [2003 -09 - 16]. http://quartz. syr. edu/quali-ty/Overview. htm.
5Gross, Melisa etc. Assessing quality in digital reference services: overview of key literature on digital reference. [ 2003 - 09 - 16 ]. http://www. library. ucla. edu/hbraries/college/digref/articles. htm.
6Stemper, J A, Butler, J T. Developing a model to provide digital reference services. Reference Services Review, 2001, (3).?A
7Marilyn Domas White. Digital reference services: Framework for analysis and evaluation. Library & Information Science Research,2001, (23).?A
8Marilyn Domas White, Eileen G. Abels, Neal Kaske. Evaluation of Ghat Reference Service Quality Pilot Study. D-Lib Magazine. February 2003, 9(2).?A
9Charles R McClure. R David Lankes, Melissa Gross. Beverly Choltco-Devlin. Statistics, Measures, and Quality Standards for Assessing Digital Reference Library Services:Guidelines and Procedures. http://quartz. syr. edu/quality/default. htm?A
10Melissa Gross、 Charles R McClure、 R David Lankes , Assessing Quality in Digital Reference Services Phase Ⅱ: Site Visit Summary Report November 2001, http ://quartz. syr. edu/quality/default. htm.
