Crismundo, M. U. Mining companies urged to plant trees. IN Environment News. Manila Bulletin.
芝加哥风格引文Crismundo, Mike U. "Mining Companies Urged to Plant Trees. IN Environment News." Manila Bulletin .
MLA引文Crismundo, Mike U. "Mining Companies Urged to Plant Trees. IN Environment News." Manila Bulletin, .
警告：这些引文格式不一定是100％准确.