APA (7th ed.) Citation

Long, J. O. (2012). ITIL® 2011 At a Glance. Springer New York : Imprint: Springer.

Chicago Style (17th ed.) Citation

Long, John O. ITIL® 2011 At a Glance. New York, NY: Springer New York : Imprint: Springer, 2012.

MLA (8th ed.) Citation

Long, John O. ITIL® 2011 At a Glance. Springer New York : Imprint: Springer, 2012.