Cassell, Kay Ann
Reference and information services : an introduction
Neal-Schuman, an imprint of the American Library Association, 2013
 Buku Teks
Katz, William A., 1924-
Introduction to reference work; Volume II: reference services and reference processes
McGraw-Hill, 1987
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Katz, William A., 1924-
Introduction to reference work volume II: reference services and reference progresses
McGraww-Hill, 1992
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Reference services in the humanities
edited by Judy Reynolds
Haworth Press, 1994
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Pugh, Mary Jo
Providing reference services for archives and manuscripts
The Society of American Archivists, 1992
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