Calder, A. (2018). Cyber Essentials - A Pocket Guide (1st edition.). IT Governance Publishing.
Cita Chicago Style (17a ed.)Calder, Alan. Cyber Essentials - A Pocket Guide. 1st edition. IT Governance Publishing, 2018.
Cita MLA (8a ed.)Calder, Alan. Cyber Essentials - A Pocket Guide. 1st edition. IT Governance Publishing, 2018.
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