Peria, E. (2006). Amended patent system to lower drug prices. Philippine Daily Inquirer.
Chicago (17e ed.) BronvermeldingPeria, Elpidio. "Amended Patent System to Lower Drug Prices." Philippine Daily Inquirer 2006.
MLA (9e ed.) BronvermeldingPeria, Elpidio. "Amended Patent System to Lower Drug Prices." Philippine Daily Inquirer, 2006.
Let op: Deze citaties zijn niet altijd 100% accuraat.