Watts, P. (1984). The potential for postbus development. Transport and Road Research Laboratory.
Citazione stile Chigago Style (17a edizione)Watts, P.F. The Potential for Postbus Development. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1984.
Citatione MLA (9a ed.)Watts, P.F. The Potential for Postbus Development. Transport and Road Research Laboratory, 1984.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.