Cundill, M. A., & Watts, P. F. (1973). Bus boarding and alighting times. Public Transport Division, Transport Operations Dept., Transport and Road Research Laboratory Available through the National Technical Information Service].
Lua i Stíl Chicago (17ú heag.)Cundill, M. A., agus P. F. Watts. Bus Boarding and Alighting Times. Crowthorne, Berkshire, [Springfield, Va: Public Transport Division, Transport Operations Dept., Transport and Road Research Laboratory Available through the National Technical Information Service], 1973.
Lua MLA (9ú heag.)Cundill, M. A., agus P. F. Watts. Bus Boarding and Alighting Times. Public Transport Division, Transport Operations Dept., Transport and Road Research Laboratory Available through the National Technical Information Service], 1973.