M11
Soncuya, Josue. Historia Prehispana de Filipinas contenida en la Conferencia sobre la isla de Panay, los Bisayas y la Monarquía, Explicación del Triunvirato de Reyes en Manila, Boletin de la Sociedad Historico-geografica de Filipinas. (Prehispanic History of the Philippines contained in the Conference on Panay island, the Visayas and the Monarchy, Explanation of the Triumvirate of Kings in Manila, Bulletin of the Historical-geographical Society of the Philippines.) Vol. 1, No. 5. August 1917. p. 10

From W.H. Scott. Prehispanic Source Materials for the Study of Philippine History, revised edtion, 1984. pp. 103, 132, 151, 180.