Cuevas, Miguel. “Philippine Ancient Writing and the Adoption of the Latin Alphabet to Represent the Languages of the Archipelago in the Arts and Orthographies of the Spanish Colonial Missionary Tradition”. Onomázein , no. 32 (December 31, 2015): 37–61. Accessed July 22, 2024. https://onomazein.letras.uc.cl/index.php/onom/article/view/30001.