Não informado. (1957). Diesel and gas turbine progress. Diesel & Gas Turbine Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Diesel and Gas Turbine Progress. Brookfield, Wis: Diesel & Gas Turbine Publications, 1957.
Lua MLA (8ú heag.)Não informado. Diesel and Gas Turbine Progress. Diesel & Gas Turbine Publications, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.