United States. Department of Commerce. (1931). Aircraft accidents: Letter from the acting secretary of commerce transmitting, in response to Senate resolution no. 206, information on aircraft accidents which have occurred between the dates of May 20, 1926, and May 16, 1930, of which the department has a record. U.S. Govt. print. off.
Chicago Style (17th ed.) CitationUnited States. Department of Commerce. Aircraft Accidents: Letter from the Acting Secretary of Commerce Transmitting, in Response to Senate Resolution No. 206, Information on Aircraft Accidents Which Have Occurred Between the Dates of May 20, 1926, and May 16, 1930, of Which the Department Has a Record. Washington: U.S. Govt. print. off, 1931.
MLA (9th ed.) CitationUnited States. Department of Commerce. Aircraft Accidents: Letter from the Acting Secretary of Commerce Transmitting, in Response to Senate Resolution No. 206, Information on Aircraft Accidents Which Have Occurred Between the Dates of May 20, 1926, and May 16, 1930, of Which the Department Has a Record. U.S. Govt. print. off, 1931.