Lhamo, Dema, Sonam Wangchuk, Sonam Wangchuk, and Ugyen Dorji. 2013. “Cost Control the Bhutanese Construction Projects”. Zorig Melong | A Technical Journal of Science, Engineering and Technology 1 (1): 1-10. http://103.133.216.217/index.php/zm/article/view/38.