Nwachukwu, L., S. Orji, and E. Agu. “Assessing IPD’s Potential in Improving Building Projects Performance in Enugu State, Nigeria”. The International Journal of Science & Technoledge, vol. 6, no. 3, Mar. 2018, http://internationaljournalcorner.com/index.php/theijst/article/view/129557.