Sansbury, J. (2014). Operational support and analysis: A guide for ITIL exam candidates. BCS Learning & Development Ltd.
Παραπομπή Chicago StyleSansbury, John. Operational Support and Analysis: A Guide for ITIL Exam Candidates. BCS Learning & Development Ltd, 2014.
Παραπομπή MLASansbury, John. Operational Support and Analysis: A Guide for ITIL Exam Candidates. BCS Learning & Development Ltd, 2014.
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