Searle, A. B. Refractories for furnaces.
Lua i Stíl Chicago (17ú heag.)Searle, Alfred B. Refractories for Furnaces.
Lua MLA (8ú heag.)Searle, Alfred B. Refractories for Furnaces.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.