Não informado. (1922). Refrigerating Engineering. American Society of Refrigerating Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Refrigerating Engineering. New York: American Society of Refrigerating Engineers, 1922.
Lua MLA (8ú heag.)Não informado. Refrigerating Engineering. American Society of Refrigerating Engineers, 1922.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.