Sonza, Demy. "The Port of Iloilo: 1855-2005". Graciano Lopez-Jaena Life and Works and Iloilo History Online Resource. Dr. Graciano Lopez-Jaena (DGLJ) Foundation, Inc. Archived from the original on January 19, 2016. Retrieved January 31, 2016..
Sonza, Demy. "The Port of Iloilo: 1855-2005". Graciano Lopez-Jaena Life and Works and Iloilo History Online Resource. Dr. Graciano Lopez-Jaena (DGLJ) Foundation, Inc. Archived from the original on January 19, 2016. Retrieved January 31, 2016..