Regalado, E. MGB stops nickel mining operation in Davao Oriental. The Philippine Star.
芝加哥风格引文Regalado, Edith. "MGB Stops Nickel Mining Operation in Davao Oriental." The Philippine Star .
MLA引文Regalado, Edith. "MGB Stops Nickel Mining Operation in Davao Oriental." The Philippine Star, .
警告：这些引文格式不一定是100％准确.