Sanjiv Tyagi. (2010). From gray to green: New thoughts on environment.
シカゴスタイル引用形Sanjiv Tyagi. From Gray to Green: New Thoughts on Environment. Excel Books Pvt. Ltd., New Delhi, 2010.
MLA引用形式Sanjiv Tyagi. From Gray to Green: New Thoughts on Environment. 2010.
警告: この引用は必ずしも正確ではありません.