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Hernon, P.; McClure, C.R.: Library reference service : an unrecognized crisis - a symposium (1987)
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- Source
- Journal of academic librarianship. 13(1987), S.69-80
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Hernon, P.: Utility measures, not performance measures, for library reference service? (1987)
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- Reference quarterly. 26(1987), S.449-459
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Hernon, P.; McClure, C.R.: Unobtrusive reference testing : the 55 percent rule (1986)
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- Library journal. 111(1986) no.7, S.37-41
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Hernon, P.; McClure, C.R.: Quality of data issues in unobtrusive testing of library reference service : recommendations and strategies (1987)
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- Source
- Library and information science research. 9(1987), S.77-93