Sunit Gupta. (2000). Environment crisis and management (1.). Sarup & Sons.
シカゴスタイル引用形Sunit Gupta. Environment Crisis and Management. 1. New Delhi: Sarup & Sons, 2000.
MLA引用形式Sunit Gupta. Environment Crisis and Management. 1. Sarup & Sons, 2000.
警告: この引用は必ずしも正確ではありません.