Sulaiman, S., H. E. Lim, and K. K. Viswanathan. “INTEGRATING THE TPB WITH ECONOMIC THEORIES: THE CASE OF GRADUATE ENTREPRENEUR”. Journal of Economics and Sustainability, vol. 1, no. 2, Dec. 2020, p. 14, https://e-journal.uum.edu.my/index.php/jes/article/view/12541.