Labrador, A. P. (2000). What is an original work of art? Philippine Star.
芝加哥风格引文Labrador, Ana P. "What Is an Original Work of Art?" Philippine Star 2000.
MLA引文Labrador, Ana P. "What Is an Original Work of Art?" Philippine Star, 2000.
警告：这些引文格式不一定是100％准确.