APA (7th ed.) Citation

Steen, K., & United States. National Park Service. (1991). Going-to-the-Sun Road: An engineering feat, Glacier National Park. [National Park Service].

Chicago Style (17th ed.) Citation

Steen, Kathryn., and United States. National Park Service. Going-to-the-Sun Road: An Engineering Feat, Glacier National Park. [Washington, D.C.]: [National Park Service], 1991.

MLA (8th ed.) Citation

Steen, Kathryn., and United States. National Park Service. Going-to-the-Sun Road: An Engineering Feat, Glacier National Park. [National Park Service], 1991.