APA (7th ed.) Citation

Permanent International Association of Road Congresses & World Road Congress. (1979). Conference discussions: Roads within the environment (urban and rural areas). Permanent International Association of Road Congresses.

Chicago Style (17th ed.) Citation

Permanent International Association of Road Congresses and World Road Congress. Conference Discussions: Roads Within the Environment (urban and Rural Areas). Paris: Permanent International Association of Road Congresses, 1979.

MLA (9th ed.) Citation

Permanent International Association of Road Congresses and World Road Congress. Conference Discussions: Roads Within the Environment (urban and Rural Areas). Permanent International Association of Road Congresses, 1979.