A sustainable world: defining and measuring sustainable development
edited by Thaddeus C. Trzyna
International Center for the Environment and Public Policy, 1995
 Buku Teks
Nelson, Bonnie R.
A guide to published library catalogs / Bonnie R. Nelson
Scarecrow Press, 1982
 Buku Referensi
Berman, Jeff
Maximizing project value: defining, managing, and measuring for optimal return
American Management Association, 2007
 eBooks
The new volunteerism:making it pay off for your library Bonnie F.McCune
 Artikel Jurnal
Stone, Ron Drew
The real value of training : measuring and analyzing business outcomes and the quality of ROI
McGraw-Hill, 2011
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