Yates, Rochelle
A librarian's guide to telephone reference service
Library Professional Publications, 1986
 Buku Teks
Gilbert, Wilfred C.
The Legislation reference service a brief sketch
The Library of Congress, 1952
 Buku Teks
Bacchus, William I.
Inside the legislative process: the passage of the foreign service act of 1980
Wesview Press, 1984
 Buku Teks
Pritchett, Jennifer, 1946-
Providing reference service in church and synagogue libraries
Church and Synagogue Library Association , 1987
 Buku Teks
Coffman, Steve
Going live: starting and running a virtual reference service
[American Library association, American Library association], 2003
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