Sales, P., 		Ferrer, D., 		Calacal, G., 		Salvador, J., & 		De Ungria, M.
(2019).
 Validation of Two Extraction Methods for Human DNA from Cigarette Butts.
<em>Science Diliman: A Journal Of Pure And Applied Sciences, 31</em>(1).
Retrieved from <a href="https://journals.upd.edu.ph/index.php/sciencediliman/article/view/6743" target="_new">https://journals.upd.edu.ph/index.php/sciencediliman/article/view/6743</a>