Paras-Perez, R. (1997). Profits of ignorance. Philippine Daily Inquirer.
Dyfyniad Arddull ChicagoParas-Perez, Rod. "Profits of Ignorance." Philippine Daily Inquirer 1997.
Dyfyniad MLAParas-Perez, Rod. "Profits of Ignorance." Philippine Daily Inquirer, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.