Maleewat, N., and J. Banjongprasert. “The Impact of Small Size Firm and Differentiation Strategy in the Niche Strategic Implementation on the Organizational Performance”. Asian Administration and Management Review, vol. 5, no. 1, Apr. 2022, pp. 17-28, https://so01.tci-thaijo.org/index.php/AAMR/article/view/255442.