Agutter, C. (2020). ITIL Foundation Essentials ITIL 4 Edition - The ultimate revision guide, second edition. IT Governance Publishing.
Chicago-Zitierstil (17. Ausg.)Agutter, Claire. ITIL Foundation Essentials ITIL 4 Edition - The Ultimate Revision Guide, Second Edition. [Place of publication not identified]: IT Governance Publishing, 2020.
MLA-Zitierstil (9. Ausg.)Agutter, Claire. ITIL Foundation Essentials ITIL 4 Edition - The Ultimate Revision Guide, Second Edition. IT Governance Publishing, 2020.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.