Nag, P. (1997). Geography and environment Vol -2 Resanal isue. Concept Pub. House.
Chicago (17e ed.) BronvermeldingNag, Prithvish. Geography and Environment Vol -2 Resanal Isue. New delhi: Concept Pub. House, 1997.
MLA (9e ed.) BronvermeldingNag, Prithvish. Geography and Environment Vol -2 Resanal Isue. Concept Pub. House, 1997.
Let op: Deze citaties zijn niet altijd 100% accuraat.