APA

United States, . (1991). Geographic information systems guidebook for use in the integrated resource management process. [Phoenix, Ariz.?]: forest Service.

Chicago

United States, . 1991. Geographic information systems guidebook for use in the integrated resource management process. [Phoenix, Ariz.?]: forest Service.

Harvard

United States, . (1991). Geographic information systems guidebook for use in the integrated resource management process. [Phoenix, Ariz.?]: forest Service.

MLA

United States, . Geographic information systems guidebook for use in the integrated resource management process. [Phoenix, Ariz.?]: forest Service. 1991.