Portugal, R. F., & Reyes, D. D. The domestic resource cost analysis of copper smelting in the Philippines.
芝加哥风格引文Portugal, Roque Francisco, 与 Daniel Delfin Reyes. The Domestic Resource Cost Analysis of Copper Smelting in the Philippines.
MLA引文Portugal, Roque Francisco, 与 Daniel Delfin Reyes. The Domestic Resource Cost Analysis of Copper Smelting in the Philippines.
警告：这些引文格式不一定是100％准确.