Não informado. (1977). Fueloil and oil heat and solar systems. Industry Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Fueloil and Oil Heat and Solar Systems. Cedar Grove, NJ: Industry Publications, 1977.
Lua MLA (8ú heag.)Não informado. Fueloil and Oil Heat and Solar Systems. Industry Publications, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.