Pratono, A. H., R. S. Saputra, and J. K. Pudjibudojo. “The Social Capital and Firm Performance: Evident from Indonesia Small Businesses”. International Journal of Economics and Financial Issues, vol. 6, no. 7S, Nov. 2016, pp. 47-50, https://www.econjournals.com/index.php/ijefi/article/view/3576.