Ocampo, K. R. MGB: HMC mining permit renewal unlikely. IN Business. Philippine Daily Inquirer.
芝加哥风格引文Ocampo, Karl R. "MGB: HMC Mining Permit Renewal Unlikely. IN Business." Philippine Daily Inquirer .
MLA引文Ocampo, Karl R. "MGB: HMC Mining Permit Renewal Unlikely. IN Business." Philippine Daily Inquirer, .
警告：这些引文格式不一定是100％准确.