Singh, M. (1989). Environmental changes and development. Chaugh.
Chicagoスタイル(17版)引用形式Singh, M. Environmental Changes and Development. Allahabad: Chaugh, 1989.
MLA(9版)引用形式Singh, M. Environmental Changes and Development. Chaugh, 1989.
警告: この引用は必ずしも正確ではありません.