The Economist Intelligence Unit. (1999). Best practices: Environment. Univerties Press.
Chicago (17e ed.) BronvermeldingThe Economist Intelligence Unit. Best Practices: Environment. India: Univerties Press, 1999.
MLA (8e ed.) BronvermeldingThe Economist Intelligence Unit. Best Practices: Environment. Univerties Press, 1999.
Let op: Deze citaties zijn niet altijd 100% accuraat.