GUPTA, R. (2012). ENERGY & ENVIRONMENTAL MANAGEMENT IN METALLURGICAL INDUSTRIES. PHI.
芝加哥风格引文GUPTA, R.C. ENERGY & ENVIRONMENTAL MANAGEMENT IN METALLURGICAL INDUSTRIES. N DELHI: PHI, 2012.
MLA引文GUPTA, R.C. ENERGY & ENVIRONMENTAL MANAGEMENT IN METALLURGICAL INDUSTRIES. PHI, 2012.
警告：这些引文格式不一定是100％准确.