Cita APA (7th ed.)

Zegeer, C. V., & Zegeer, S. F. (1988). Pedestrians and traffic control measures. Transportation Research Board, National Research Council.

Cita Chicago (17th ed.)

Zegeer, Charles V., i Sharon F. Zegeer. Pedestrians and Traffic Control Measures. Washington, D.C.: Transportation Research Board, National Research Council, 1988.

Cita MLA (8th ed.)

Zegeer, Charles V., i Sharon F. Zegeer. Pedestrians and Traffic Control Measures. Transportation Research Board, National Research Council, 1988.