Frick, E. (2017). Information technology essentials: An introduction to information technology. Eric Frick.
Chicago-viite (17. p.)Frick, Eric. Information Technology Essentials: An Introduction to Information Technology. [Columbus, Ohio]: Eric Frick, 2017.
MLA-viite (9. p.)Frick, Eric. Information Technology Essentials: An Introduction to Information Technology. Eric Frick, 2017.
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