Ullah, Furqan, et al. “DELUSION AND MADNESS OF THE CROWDS: COLLECTIVE PERCEPTION IN PAKISTANI EXCHANGE MARKETS”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 5, Oct. 2021, pp. 2754-67, http://www.cibgp.com/index.php/1323-6903/article/view/2146.