Chanadda Petchprayoon ช.เ., Numchai Supparerkchaisakul น.ศ. and ภัทราวิวัฒน์ ก. 2018. Smartphone Addiction of Students: A Scale Development in the Context of Undergraduate Students in Bangkok. Dusit Thani College Journal. 11, 3 (Apr. 2018), 325–340.