Thanida Jomyim. และ Ardiporn Khemarangsan. (2011) Improving customer communications and customer relationship management through search engine optimization. Silpakorn University:ม.ป.ท.Thanida Jomyim. และ Ardiporn Khemarangsan. 2011. Improving customer communications and customer relationship management through search engine optimization. ม.ป.ท.:Silpakorn University;Thanida Jomyim. และ Ardiporn Khemarangsan. Improving customer communications and customer relationship management through search engine optimization. ม.ป.ท.:Silpakorn University, 2011. Print.