Frick, E. (2017). Information technology essentials: An introduction to information technology. Eric Frick.
Lua i Stíl Chicago (17ú heag.)Frick, Eric. Information Technology Essentials: An Introduction to Information Technology. [Columbus, Ohio]: Eric Frick, 2017.
Lua MLA (9ú heag.)Frick, Eric. Information Technology Essentials: An Introduction to Information Technology. Eric Frick, 2017.
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