Aticha Kwaengsopha และผู้แต่งคนอื่นๆ. (2010) Case study of investigate and improve customer relationship management for sales and events management department in Shangri-La Hotel Chiang mai. Silpakorn University:ม.ป.ท.Aticha Kwaengsopha และผู้แต่งคนอื่นๆ. 2010. Case study of investigate and improve customer relationship management for sales and events management department in Shangri-La Hotel Chiang mai. ม.ป.ท.:Silpakorn University;Aticha Kwaengsopha และผู้แต่งคนอื่นๆ. Case study of investigate and improve customer relationship management for sales and events management department in Shangri-La Hotel Chiang mai. ม.ป.ท.:Silpakorn University, 2010. Print.