APA (7th ed.) Citation

Kohr, R. F. (1925). Condensation of water from engine exhaust for airship ballasting. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Kohr, Robert Franz. Condensation of Water from Engine Exhaust for Airship Ballasting. [Washington?]: U.S. Government Printing Office, 1925.

MLA (9th ed.) Citation

Kohr, Robert Franz. Condensation of Water from Engine Exhaust for Airship Ballasting. U.S. Government Printing Office, 1925.