Thanuncha Jitsanong และ Ardiporn khemarangsan. (2010) An effective internal communication of sharing information : case study in sales and marketing department communicate with other departments, Conrad Bangkok. Silpakorn University:ม.ป.ท.Thanuncha Jitsanong และ Ardiporn khemarangsan. 2010. An effective internal communication of sharing information : case study in sales and marketing department communicate with other departments, Conrad Bangkok. ม.ป.ท.:Silpakorn University;Thanuncha Jitsanong และ Ardiporn khemarangsan. An effective internal communication of sharing information : case study in sales and marketing department communicate with other departments, Conrad Bangkok. ม.ป.ท.:Silpakorn University, 2010. Print.