Não informado. (1969). Diesel and gas turbine progress worldwide. Diesel & Gas Turbine Publications.
Chicago-referens (17:e uppl.)Não informado. Diesel and Gas Turbine Progress Worldwide. Brookfield, Wis: Diesel & Gas Turbine Publications, 1969.
MLA-referens (8:e uppl.)Não informado. Diesel and Gas Turbine Progress Worldwide. Diesel & Gas Turbine Publications, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.