APA引文

(1999). Hormones cause skin changes during pregnancy. Manila Bulletin.

芝加哥风格引文

"Hormones Cause Skin Changes During Pregnancy." Manila Bulletin 1999.

MLA引文

"Hormones Cause Skin Changes During Pregnancy." Manila Bulletin, 1999.

警告：这些引文格式不一定是100％准确.