Não informado. (1959). Diesel and gas engine progress. Diesel & Gas Turbine Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Diesel and Gas Engine Progress. Brookfield, Wis: Diesel & Gas Turbine Publications, 1959.
Lua MLA (8ú heag.)Não informado. Diesel and Gas Engine Progress. Diesel & Gas Turbine Publications, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.