Estupigan, R. (1997). Revolutionary ingenuity: The advent of the automobile. Manila Bulletin.
Chicago Style (17th ed.) CitationEstupigan, Ruth. "Revolutionary Ingenuity: The Advent of the Automobile." Manila Bulletin 1997.
MLA (9th ed.) CitationEstupigan, Ruth. "Revolutionary Ingenuity: The Advent of the Automobile." Manila Bulletin, 1997.
Warning: These citations may not always be 100% accurate.