APA (7th ed.) Citation

Butowsky, H. A. (1989). Astronomy and astrophysics National Historic Landmark theme study. Dept. of the Interior, National Park Service.

Chicago Style (17th ed.) Citation

Butowsky, Harry A. Astronomy and Astrophysics National Historic Landmark Theme Study. Washington, D.C.: Dept. of the Interior, National Park Service, 1989.

MLA (9th ed.) Citation

Butowsky, Harry A. Astronomy and Astrophysics National Historic Landmark Theme Study. Dept. of the Interior, National Park Service, 1989.