Não informado. (1937). Tobacco situation. U.S. Department of Agriculture, Agricultural Marketing Service.
Lua i Stíl Chicago (17ú heag.)Não informado. Tobacco Situation. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1937.
Lua MLA (8ú heag.)Não informado. Tobacco Situation. U.S. Department of Agriculture, Agricultural Marketing Service, 1937.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.