Maragay, F. V. (2009). Drug companies defend 'voluntary compliance'. Manila Standard Today.
Chicago-viite (17. p.)Maragay, Fel V. "Drug Companies Defend 'Voluntary Compliance'." Manila Standard Today 2009.
MLA-viite (9. p.)Maragay, Fel V. "Drug Companies Defend 'Voluntary Compliance'." Manila Standard Today, 2009.
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