(1931). Airport rating regulations; effective as amended Sept. 1, 1931. GPO.
Chicago Style (17th ed.) CitationAirport Rating Regulations; Effective as Amended Sept. 1, 1931. [Washington]: GPO, 1931.
MLA (9th ed.) CitationAirport Rating Regulations; Effective as Amended Sept. 1, 1931. GPO, 1931.
Warning: These citations may not always be 100% accurate.