Hayes, J. W. (1966). Protecting our food. U.S. Govt. Printing Office.
Lua i Stíl Chicago (17ú heag.)Hayes, John Williams. Protecting Our Food. [Washington]: U.S. Govt. Printing Office, 1966.
Lua MLA (9ú heag.)Hayes, John Williams. Protecting Our Food. U.S. Govt. Printing Office, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.