Mohammad Saleh Khaskheli, Abdul Aziz Sahto, Waseem Raja, Aijaz Awan. “Homicidal Kala Pathar/Paraphenylene Diamine Poisoning”. Journal of Peoples University of Medical &Amp; Health Sciences Nawabshah. (JPUMHS), vol. 3, no. 2, Dec. 2013, pp. 53-55, http://121.52.155.46/index.php/ojs/article/view/120.