Não informado. (1949). Journal of Industrial Engineering. American Institute of Industrial Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Industrial Engineering. New York: American Institute of Industrial Engineers, 1949.
Lua MLA (8ú heag.)Não informado. Journal of Industrial Engineering. American Institute of Industrial Engineers, 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.