Não informado. (1915). Accident prevention magazine. Portland Cement Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Accident Prevention Magazine. Chicago, Ill: Portland Cement Association, 1915.
Lua MLA (8ú heag.)Não informado. Accident Prevention Magazine. Portland Cement Association, 1915.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.