MCLEAN, Daniel. The ITSM Iron Triangle : Incidents, Changes and Problems : Stories in Transforming ITIL Best Practice Into Operational Success. 1st Edition. Cambridgeshire : IT Governance Publishing, 2012. x, 186 s. ISBN 978-1-84928-317-5. [Počet ex. : 1, z toho voľných 0, prezenčne 1]