Nadhar, M., A. Tawe, and D. A. Parawansa. “The Effect of Work Motivation and Entrepreneurship Orientation on Business Performance through Entrepreneurial Commitments of Coffee Shops in Makassar”. International Review of Management and Marketing, vol. 7, no. 1, Jan. 2017, pp. 470-4, https://econjournals.com/index.php/irmm/article/view/3553.