Board, 1. H. R. (1959). Trip generation and urban freeway planning. Washington DC: Highway Research Board.
Citazione stile Chigago Style (17a edizione)Board, 130 Highway Research. Trip Generation and Urban Freeway Planning. Washington DC: Highway Research Board, 1959.
Citatione MLA (9a ed.)Board, 130 Highway Research. Trip Generation and Urban Freeway Planning. Washington DC: Highway Research Board, 1959.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.