Watts, G. R. (1984). Evaluation of pedal cycle spacers. Transport and Road Research Laboratory.
Citazione stile Chigago Style (17a edizione)Watts, G. R. Evaluation of Pedal Cycle Spacers. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1984.
Citatione MLA (9a ed.)Watts, G. R. Evaluation of Pedal Cycle Spacers. Transport and Road Research Laboratory, 1984.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.