Kovacs, D. K. (2009). The Kovacs guide to electronic library collection development: Essential core subject collections, selection criteria, and guidelines (2nd ed.). Neal-Schuman Publishers.
Lua i Stíl Chicago (17ú heag.)Kovacs, Diane K. The Kovacs Guide to Electronic Library Collection Development: Essential Core Subject Collections, Selection Criteria, and Guidelines. 2nd ed. New York: Neal-Schuman Publishers, 2009.
Lua MLA (9ú heag.)Kovacs, Diane K. The Kovacs Guide to Electronic Library Collection Development: Essential Core Subject Collections, Selection Criteria, and Guidelines. 2nd ed. Neal-Schuman Publishers, 2009.
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