De Vera, B. O. 15 more mining firms to undergo audit. Philippine Daily Inquirer.
芝加哥风格引文De Vera, Ben O. "15 More Mining Firms to Undergo Audit." Philippine Daily Inquirer .
MLA引文De Vera, Ben O. "15 More Mining Firms to Undergo Audit." Philippine Daily Inquirer, .
警告：这些引文格式不一定是100％准确.