A. Adekomi, D., A. A. Tijani, A. M. Afodun, and K. K. Quadri. “A Comparative Histological Study on the Effect of Exposure to the Smoke Leaf Extract of Tobacco Nicotiana, Cannabis Sativa and Datura Stramonium on the Lungs of Sprague-Dawley Rats”. Scientific Journal of Medical Science, vol. 1, no. 2, Aug. 2012, pp. 19-26, http://sjournals.com/index.php/sjms/article/view/1350.