Cervantes, D. (2001). Vets wage artificial birth control for dogs. Philippine Star.
芝加哥风格引文Cervantes, Ding. "Vets Wage Artificial Birth Control for Dogs." Philippine Star 2001.
MLA引文Cervantes, Ding. "Vets Wage Artificial Birth Control for Dogs." Philippine Star, 2001.
警告：这些引文格式不一定是100％准确.