SWARUP R. (1992). ENVIRONMENTAL PROBLEMS AND GLOBAL IMPERATIVES. MITTAL PUBLICATIONS.
芝加哥风格引文SWARUP R. ENVIRONMENTAL PROBLEMS AND GLOBAL IMPERATIVES. NEW DELHI: MITTAL PUBLICATIONS, 1992.
MLA引文SWARUP R. ENVIRONMENTAL PROBLEMS AND GLOBAL IMPERATIVES. MITTAL PUBLICATIONS, 1992.
警告：这些引文格式不一定是100％准确.