Cita APA (7th ed.)

Popkess, A. (1951). Traffic control and road accident prevention. Chapman & Hall.

Cita Chicago (17th ed.)

Popkess, Athelstan. Traffic Control and Road Accident Prevention. London: Chapman & Hall, 1951.

Cita MLA (8th ed.)

Popkess, Athelstan. Traffic Control and Road Accident Prevention. Chapman & Hall, 1951.