Sailani, M., A. Ibrahim, and Y. Bahago. “CRITICAL MOTIVATIONAL FACTORS FOR ENHANCING EMPLOYEE PERFORMANCE IN CONSTRUCTION FIRMS BASED ON CORRELATION AND PRINCIPAL COMPONENT ANALYSES”. Nigerian Journal of Technology, vol. 39, no. 3, June 2020, pp. 647-53, https://nijotech.com/index.php/nijotech/article/view/2345.