Não informado. (1973). American Lung Association bulletin. American Lung Association.
Lua i Stíl Chicago (17ú heag.)Não informado. American Lung Association Bulletin. New York: American Lung Association, 1973.
Lua MLA (8ú heag.)Não informado. American Lung Association Bulletin. American Lung Association, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.