Chitkara,M.G. (1997). Encyclopaedia of ecology, environment and pollution: Vol. 4 -Population, poverty and environment. APH Publishing.
Citação norma ChicagoChitkara,M.G. Encyclopaedia of Ecology, Environment and Pollution: Vol. 4 -Population, Poverty and Environment. New Delhi: APH Publishing, 1997.
Citação norma MLAChitkara,M.G. Encyclopaedia of Ecology, Environment and Pollution: Vol. 4 -Population, Poverty and Environment. APH Publishing, 1997.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.