บุตรขุนทอง พ. and ไพบูลย์พานิช อ. (2019) “Distance Measures for Mixed Data with Application in Cluster Analysis”, Journal of Applied Statistics and Information Technology, 1(1), pp. 31–45. available at: https://ph02.tci-thaijo.org/index.php/asit-journal/article/view/164670 (accessed: 15 April 2025).