Tjiptojuwono, Eko, and Hening Widi Oetomo. “CONSUMER PERCEPTION STUDY OF THE VALUE PROPOSITION”. International Conference of Business and Social Sciences 2, no. 1 (March 24, 2022): 520–528. Accessed May 6, 2024. https://ojsicobuss.stiesia.ac.id/index.php/icobuss1st/article/view/203.