APA Style

Purcal, J.T., Hufschmidt,M.M,James,D.E and Meister,A.D. (1990). Environment, Natural Systems, and Development An Economic Valuation Guide (Ref:1) . Baltimore: The Johns Hopkins University Press.

Chicago Style

Purcal, J.T., Hufschmidt,M.M,James,D.E and Meister,A.D. Environment, Natural Systems, and Development An Economic Valuation Guide (Ref:1). Baltimore: The Johns Hopkins University Press, 1990. .

MLA Style

Purcal, J.T., Hufschmidt,M.M,James,D.E and Meister,A.D. Environment, Natural Systems, and Development An Economic Valuation Guide (Ref:1). Baltimore: The Johns Hopkins University Press, 1990. .

Turabian Style

Purcal, J.T., Hufschmidt,M.M,James,D.E and Meister,A.D. Environment, Natural Systems, and Development An Economic Valuation Guide (Ref:1). Baltimore: The Johns Hopkins University Press, 1990. .