Estall, H. (2012). Business continuity management systems: Implementation and certification to ISO 22301. British Informatics Society Ltd.
استشهاد بنمط شيكاغوEstall, Hilary. Business Continuity Management Systems: Implementation and Certification to ISO 22301. British Informatics Society Ltd, 2012.
MLA استشهادEstall, Hilary. Business Continuity Management Systems: Implementation and Certification to ISO 22301. British Informatics Society Ltd, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.