GUZMAN, Mary Joan T.; FABITO, Robinson Q. Species Diversity of Lichens in the Province of Abra, Philippines. JPAIR Multidisciplinary Research, Philippines, v. 25, n. 1, p. 39–59, 2016. DOI: 10.7719/jpair.v25i1.388. Disponível em: https://philair.ph/index.php/jpair/article/view/388. Acesso em: 3 apr. 2025.