Calapan, S. C. (2001). Soymilk offers solution to lactose intolerance. Manila Bulletin.
Chicago Style (17. basım) AtıfCalapan, Sheila C. "Soymilk Offers Solution to Lactose Intolerance." Manila Bulletin 2001.
MLA (9th ed.) AtıfCalapan, Sheila C. "Soymilk Offers Solution to Lactose Intolerance." Manila Bulletin, 2001.
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