Dyfyniad APA

Van Bon, J. (2011). ITIL 2011 edition: A pocket guide. Van Haren Publishing.

Dyfyniad Arddull Chicago

Van Bon, Jan. ITIL 2011 Edition: A Pocket Guide. Zaltbommel, Netherlands: Van Haren Publishing, 2011.

Dyfyniad MLA

Van Bon, Jan. ITIL 2011 Edition: A Pocket Guide. Van Haren Publishing, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.