Drewitt, T. (2013). A manager's guide to ISO22301: Practical guide to developing and implementing a business continuity management system. IT Governance Publishing.
Lua i Stíl Chicago (17ú heag.)Drewitt, Tony. A Manager's Guide to ISO22301: Practical Guide to Developing and Implementing a Business Continuity Management System. Ely, Cambridgeshire: IT Governance Publishing, 2013.
Lua MLA (9ú heag.)Drewitt, Tony. A Manager's Guide to ISO22301: Practical Guide to Developing and Implementing a Business Continuity Management System. IT Governance Publishing, 2013.
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