APA

United States, . (1992). Management plan: North Fork study area, Glacier National Park, Montana. [Washington, D.C.?]: U.S. Dept. of the Interior, National Park Service.

Chicago

United States, . 1992. Management plan: North Fork study area, Glacier National Park, Montana. [Washington, D.C.?]: U.S. Dept. of the Interior, National Park Service.

Harvard

United States, . (1992). Management plan: North Fork study area, Glacier National Park, Montana. [Washington, D.C.?]: U.S. Dept. of the Interior, National Park Service.

MLA

United States, . Management plan: North Fork study area, Glacier National Park, Montana. [Washington, D.C.?]: U.S. Dept. of the Interior, National Park Service. 1992.