APA

Freeman A. M., . (1973). the economics of environmental policy. New York: John Wiley.

Chicago

Freeman A Myrick, . 1973. the economics of environmental policy. New York: John Wiley.

Harvard

Freeman A. M., . (1973). the economics of environmental policy. New York: John Wiley.

MLA

Freeman A Myrick, . the economics of environmental policy. New York: John Wiley. 1973.