APA (7th ed.) Citation

United States. General Accounting Office. (1928). Standard form of flight certificate and schedule. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. General Accounting Office. Standard Form of Flight Certificate and Schedule. Washington: [publisher not identified], 1928.

MLA (9th ed.) Citation

United States. General Accounting Office. Standard Form of Flight Certificate and Schedule. [publisher not identified], 1928.