Najma,Heptulla. (1993). Environment protection in developing countries. Oxford & IBH Publishing Co.Pvt.Ltd.
シカゴスタイル引用形Najma,Heptulla. Environment Protection in Developing Countries. New Delhi: Oxford & IBH Publishing Co.Pvt.Ltd, 1993.
MLA引用形式Najma,Heptulla. Environment Protection in Developing Countries. Oxford & IBH Publishing Co.Pvt.Ltd, 1993.
警告: この引用は必ずしも正確ではありません.