Kern, M. Kathleen
Virtual reference best practices: tailoring services to your library
American Management Association, 2009
 eBooks
Donzel, E. Van
Islamic desk reference
E.J. Brill, 1994
 Buku Referensi
The Paralegall's desk reference
New-York: Prentice Hall, 1993,
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Heisler, Sanford I
The Wiley engineer's desk reference
John Wiley & Sons, 1984
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World desk reference
edited by Andrew Heritage
Dorling Kindersley, 2000
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