FREITAG, Hendrik; ZAHN, Erika; GOELTENBOTH, Friedhelm. Freshwater investigations on Apid Island, Inopacan, Leyte, Philippines: results of lithotelmic investigation. Annals of Tropical Research, [S. l.], v. 21, p. 41–53, 1999. Disponível em: https://atr.vsu.edu.ph/article/view/547. Acesso em: 5 dec. 2025.