Bloomberg, Marry
Libraries Unlimited, 1985
Buku Teks
American Library Association, 2018
Majalah, Jurnal, Buletin
Intner, Sheila S.
[American Management Association, ], 2008
eBooks
Gorman, Michael
Libraries Unlimited, 1990
Buku Teks
Washington, Allyn J.
Cummings Menlo Park, 1969
Buku Teks