Adamu, Muhammad, and Mahani Mohammad Abdu Shakur. “The Relationships of Expectancy, Instrumentality and Valence for Motivation in Self-Employment: A Mediation of Entrepreneurial Motivation in Nigeria”. International Journal of Business and Management Future, vol. 2, no. 1, Apr. 2018, pp. 48-54, https://doi.org/10.46281/ijbmf.v2i1.119.