Armstrong, B. D. (1980). The allocation of transport fuels to minimise costs. Transport and Road Research Laboratory.
Cita Chicago (17th ed.)Armstrong, B. D. The Allocation of Transport Fuels to Minimise Costs. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1980.
Cita MLA (9th ed.)Armstrong, B. D. The Allocation of Transport Fuels to Minimise Costs. Transport and Road Research Laboratory, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.