APA Style

Gardner,D.E. (1990). Role of Biological Control as a management tool in National Parks and other Natural Areas. . Washington,D.C: United State Department of the Interior.

Chicago Style

Gardner,D.E. Role of Biological Control as a management tool in National Parks and other Natural Areas.. Washington,D.C: United State Department of the Interior, 1990. .

MLA Style

Gardner,D.E. Role of Biological Control as a management tool in National Parks and other Natural Areas.. Washington,D.C: United State Department of the Interior, 1990. .

Turabian Style

Gardner,D.E. Role of Biological Control as a management tool in National Parks and other Natural Areas.. Washington,D.C: United State Department of the Interior, 1990. .