Zeb, Anwar, Abdul Qudoos, and Hashim Hanif. 2015. “Identification and Analysis of Factors Affecting Machinery in the Construction Industry of Pakistan”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 19 (1):269-78. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/3217.