Cassidy, A., & Cassidy, D. (2010). A practical guide to reducing IT costs. J. Ross Pub..
Lua i Stíl Chicago (17ú heag.)Cassidy, Anita, agus Dan Cassidy. A Practical Guide to Reducing IT Costs. Ft. Lauderdale, Fla.: J. Ross Pub., 2010.
Lua MLA (9ú heag.)Cassidy, Anita, agus Dan Cassidy. A Practical Guide to Reducing IT Costs. J. Ross Pub., 2010.
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