Cooper, B. R., & Layfield, R. E. (1977). Bus priority at traffic signals terminating a contra-flow bus lane in Walsall. Transport and Road Research Laboratory.
Citação norma ChicagoCooper, B. R., and R. E. Layfield. Bus Priority at Traffic Signals Terminating a Contra-flow Bus Lane in Walsall. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1977.
Citação norma MLACooper, B. R., and R. E. Layfield. Bus Priority at Traffic Signals Terminating a Contra-flow Bus Lane in Walsall. Transport and Road Research Laboratory, 1977.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.