National Industrial Fuel Efficiency Service. (1985). Energy manager's handbook. Graham & Trotman.
Citazione stile Chigago Style (17a edizione)National Industrial Fuel Efficiency Service. Energy Manager's Handbook. London: Graham & Trotman, 1985.
Citatione MLA (9a ed.)National Industrial Fuel Efficiency Service. Energy Manager's Handbook. Graham & Trotman, 1985.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.