National Automobile Chamber of Commerce, Automobile Manufacturers Association, & Motor Vehicle Manufacturers Association of the United States. (1934). Automobile facts and figures. National Automobile Chamber of Commerce.
Lua i Stíl Chicago (17ú heag.)National Automobile Chamber of Commerce, Automobile Manufacturers Association, agus Motor Vehicle Manufacturers Association of the United States. Automobile Facts and Figures. Detroit: National Automobile Chamber of Commerce, 1934.
Lua MLA (8ú heag.)National Automobile Chamber of Commerce, et al. Automobile Facts and Figures. National Automobile Chamber of Commerce, 1934.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.