Patthama Saeting และ Mingmanas Sivaraksa. (2013) A comparative study of book selling recommendation techniques. Mahidol University:ม.ป.ท.Patthama Saeting และ Mingmanas Sivaraksa. 2013. A comparative study of book selling recommendation techniques. ม.ป.ท.:Mahidol University;Patthama Saeting และ Mingmanas Sivaraksa. A comparative study of book selling recommendation techniques. ม.ป.ท.:Mahidol University, 2013. Print.