Agutter, C. (2013). ITIL Lifecycle Essentials: Your Essential Guide for the ITIL Foundation Exam and Beyond. IT Governance Publishing.
Chicago-Zitierstil (17. Ausg.)Agutter, Claire. ITIL Lifecycle Essentials: Your Essential Guide for the ITIL Foundation Exam and Beyond. Ely: IT Governance Publishing, 2013.
MLA-Zitierstil (9. Ausg.)Agutter, Claire. ITIL Lifecycle Essentials: Your Essential Guide for the ITIL Foundation Exam and Beyond. IT Governance Publishing, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.