Board, 1. H. R. (1959). Trip generation and urban freeway planning. Washington DC: Highway Research Board.
Chicago-viite (17. p.)Board, 130 Highway Research. Trip Generation and Urban Freeway Planning. Washington DC: Highway Research Board, 1959.
MLA-viite (9. p.)Board, 130 Highway Research. Trip Generation and Urban Freeway Planning. Washington DC: Highway Research Board, 1959.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.