APA (7th ed.) Citation

United States. Navy Department. Bureau of Aeronautics. (1925). Precautions to be taken in cleaning B-G spark plugs. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Navy Department. Bureau of Aeronautics. Precautions to Be Taken in Cleaning B-G Spark Plugs. Washington: [publisher not identified], 1925.

MLA (9th ed.) Citation

United States. Navy Department. Bureau of Aeronautics. Precautions to Be Taken in Cleaning B-G Spark Plugs. [publisher not identified], 1925.