Pangaribuan, C. H., and R. A. Febriyanto. “Motivational Impact and Value Perception of Digital Badges towards Applying for Jobs: Evidence from Indonesian Undergraduates”. International Review of Management and Marketing, vol. 9, no. 4, Aug. 2019, pp. 121-30, https://www.econjournals.com/index.php/irmm/article/view/8172.