Abdul Hamid, R. and Kehinde, F. J. (2017) “CHOOSING AN APPROPRIATE CONTINGENCY SUM ESTIMATING METHODS FOR HIGHWAY CONSTRUCTION PROJECTS IN NIGERIA: A LITERATURE REVIEW”, PLANNING MALAYSIA, 15(1). Available at: https://journals.iium.edu.my/pmr/index.php/pmj/article/view/217 (Accessed: 14 May 2026).