APA

McClellan G. S., . (1971). Land use in the United States: exploitation or conservation?. New York: H. W. Wilson Co.

Chicago

McClellan Grant S, . 1971. Land use in the United States: exploitation or conservation?. New York: H. W. Wilson Co.

Harvard

McClellan G. S., . (1971). Land use in the United States: exploitation or conservation?. New York: H. W. Wilson Co.

MLA

McClellan Grant S, . Land use in the United States: exploitation or conservation?. New York: H. W. Wilson Co. 1971.