Tacio, H. D. (2017). Hard times for Philippine birds. Philippine Graphic.
芝加哥风格引文Tacio, Henrylito D. "Hard Times for Philippine Birds." Philippine Graphic 2017.
MLA引文Tacio, Henrylito D. "Hard Times for Philippine Birds." Philippine Graphic, 2017.
警告：这些引文格式不一定是100％准确.