"G.R. No. 133064". Supreme Court of the Republic of the Philippines. September 16, 1999. Archived from the original on September 15, 2017. Retrieved July 11, 2021.
"G.R. No. 133064". Supreme Court of the Republic of the Philippines. September 16, 1999. Archived from the original on September 15, 2017. Retrieved July 11, 2021.