ธนรุ่งเจริญกิจ ภาพิมล, and ชุมเกตุ จิตพนธ์. “SEVICE INNOVATION WHICH AFFECTED E-BOOK PURCHASING DECISION OF NEW GENERATION CONSUMERS”. Journal of Energy and Environment Technology of Graduate School Siam Technology College 4, no. 2 (January 1, 2017): 18–27. Accessed May 11, 2024. https://ph01.tci-thaijo.org/index.php/JEET/article/view/186874.