Cita APA (7a ed.)

Clifford, D. (2011). ISO/IEC 20000: An introduction to the global standard for service management (2nd ed.). IT Governance Pub.

Cita Chicago Style (17a ed.)

Clifford, David. ISO/IEC 20000: An Introduction to the Global Standard for Service Management. 2nd ed. Cambridgeshire, U.K.: IT Governance Pub, 2011.

Cita MLA (9a ed.)

Clifford, David. ISO/IEC 20000: An Introduction to the Global Standard for Service Management. 2nd ed. IT Governance Pub, 2011.