Alejandro, C. (2005). Vitamin D is a vital key in osteoporosis management. Philippine Star.
芝加哥风格引文Alejandro, Chat. "Vitamin D Is a Vital Key in Osteoporosis Management." Philippine Star 2005.
MLA引文Alejandro, Chat. "Vitamin D Is a Vital Key in Osteoporosis Management." Philippine Star, 2005.
警告：这些引文格式不一定是100％准确.