Não informado. (1988). Diesel progress engines & drives. Diesel & Gas Turbine Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Diesel Progress Engines & Drives. Brookfield, Wis: Diesel & Gas Turbine Publications, 1988.
Lua MLA (8ú heag.)Não informado. Diesel Progress Engines & Drives. Diesel & Gas Turbine Publications, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.