Woralak Yuttavanichakul และ Parames Chutima. (2009) Process improvement for it data centre migration by it infrastructure library (ITIL) guideline. Chulalongkorn University:ม.ป.ท.Woralak Yuttavanichakul และ Parames Chutima. 2009. Process improvement for it data centre migration by it infrastructure library (ITIL) guideline. ม.ป.ท.:Chulalongkorn University;Woralak Yuttavanichakul และ Parames Chutima. Process improvement for it data centre migration by it infrastructure library (ITIL) guideline. ม.ป.ท.:Chulalongkorn University, 2009. Print.