Walmsley, D. A. (1979). A parametric model of inter-city passenger transport. Transport and Road Research Laboratory.
Citazione stile Chigago Style (17a edizione)Walmsley, D. A. A Parametric Model of Inter-city Passenger Transport. Crowthorne, [Eng.]: Transport and Road Research Laboratory, 1979.
Citatione MLA (9a ed.)Walmsley, D. A. A Parametric Model of Inter-city Passenger Transport. Transport and Road Research Laboratory, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.