Dy, R. (2000). Teofilo Yldefonso: The first Filipino Olympic medalist. Manila Times.
芝加哥风格引文Dy, Richard. "Teofilo Yldefonso: The First Filipino Olympic Medalist." Manila Times 2000.
MLA引文Dy, Richard. "Teofilo Yldefonso: The First Filipino Olympic Medalist." Manila Times, 2000.
警告：这些引文格式不一定是100％准确.