Nag, P. (1997). Geography and environment Vol -2 Resanal isue. Concept Pub. House.
Chicagoスタイル(17版)引用形式Nag, Prithvish. Geography and Environment Vol -2 Resanal Isue. New delhi: Concept Pub. House, 1997.
MLA(9版)引用形式Nag, Prithvish. Geography and Environment Vol -2 Resanal Isue. Concept Pub. House, 1997.
警告: この引用は必ずしも正確ではありません.