Olchondra, R. T. (2010). S. Cotabato bans open pit mining: Mines bureau, private firms hit LGU move. Philippine Daily Inquirer.
Citación estilo ChicagoOlchondra, Riza T. "S. Cotabato Bans Open Pit Mining: Mines Bureau, Private Firms Hit LGU Move." Philippine Daily Inquirer 2010.
Cita MLAOlchondra, Riza T. "S. Cotabato Bans Open Pit Mining: Mines Bureau, Private Firms Hit LGU Move." Philippine Daily Inquirer, 2010.
Warning: These citations may not always be 100% accurate.