Grenz, Jan, Sandra Zukunft, and Victor B. Asio. “Geomorphology and Soils of Apid Island, Inopacan, Leyte, Philippines”. Annals of Tropical Research 21 (September 9, 1999): 1–8. Accessed May 2, 2025. https://atr.vsu.edu.ph/article/view/543.