De Silva, L. P. J. (2005). The geology of the panghilod, the traditional Filipino stone tool. IN Star science [column]. Philippine Star.
Chicago Style (17th ed.) CitationDe Silva, Leopoldo P. Jr. "The Geology of the Panghilod, the Traditional Filipino Stone Tool. IN Star Science [column]." Philippine Star 2005.
MLA (9th ed.) CitationDe Silva, Leopoldo P. Jr. "The Geology of the Panghilod, the Traditional Filipino Stone Tool. IN Star Science [column]." Philippine Star, 2005.
Warning: These citations may not always be 100% accurate.