Naguit, Maria Rio A., et al. “Lead and Zinc Concentrations in the Venus Clam, Paphia Textile (Gmelin) in Soft- Bottom Communities of Katipunan and Roxas, Zamboanga Del Norte: An Indicator of Heavy Metal Contamination ”. Silliman Journal, vol. 45, no. 2, Dec. 2022, https://su-journal.su.edu.ph/index.php/sj/article/view/289.