APA (7th ed.) Citation

United States. Coast Guard. (1927). Amendment to Circular Letter No. 6, instructions for commissary officers. GPO.

Chicago Style (17th ed.) Citation

United States. Coast Guard. Amendment to Circular Letter No. 6, Instructions for Commissary Officers. [Washington]: GPO, 1927.

MLA (9th ed.) Citation

United States. Coast Guard. Amendment to Circular Letter No. 6, Instructions for Commissary Officers. GPO, 1927.