Calica, A. P-Noy awards mining companies for exemplary practices. In People & Events. The Philippine Star.
芝加哥风格引文Calica, Aurea. "P-Noy Awards Mining Companies for Exemplary Practices. In People & Events." The Philippine Star .
MLA引文Calica, Aurea. "P-Noy Awards Mining Companies for Exemplary Practices. In People & Events." The Philippine Star, .
警告：这些引文格式不一定是100％准确.