Personnel issues in reference services / edited by Bill Katz and Ruth A. Fraley
Haworth Press, 1986
 Buku Referensi
Evaluation of reference services / edited by Bill Katz and Ruth A. Fraley
Haworth Press, 1984
 Buku Referensi
Kern, M. Kathleen, author
Virtual reference best practices: tailoring services to your library
[American Management Association, ], 2009
 eBooks
Lankes, R. David, author
Implementing digital reference services : setting standards and making it real
Facet Publishing, 2003
 Buku Teks
Guidelines for reference and information services in public libraries / Library Association Information Services Group
Library Association Publishing, 1999
 Buku Referensi
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