Maragay, F. V. (2009). Drug companies defend 'voluntary compliance'. Manila Standard Today.
Lua i Stíl Chicago (17ú heag.)Maragay, Fel V. "Drug Companies Defend 'Voluntary Compliance'." Manila Standard Today 2009.
Lua MLA (9ú heag.)Maragay, Fel V. "Drug Companies Defend 'Voluntary Compliance'." Manila Standard Today, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.