APA (7th ed.) Citation

Petrossian, S. V. (1980). Traffic signals. Main Roads Dept., W.A..

Chicago Style (17th ed.) Citation

Petrossian, Sarkis V. Traffic Signals. Perth: Main Roads Dept., W.A., 1980.

MLA (8th ed.) Citation

Petrossian, Sarkis V. Traffic Signals. Main Roads Dept., W.A., 1980.