World Road Congress & Permanent International Association of Road Congresses. (1979). General report, question I: Classification, properties, and tests of road materials. Permanent International Association of Road Congresses.
Chicago Style (17th ed.) CitationWorld Road Congress and Permanent International Association of Road Congresses. General Report, Question I: Classification, Properties, and Tests of Road Materials. Paris: Permanent International Association of Road Congresses, 1979.
MLA (9th ed.) CitationWorld Road Congress and Permanent International Association of Road Congresses. General Report, Question I: Classification, Properties, and Tests of Road Materials. Permanent International Association of Road Congresses, 1979.
Warning: These citations may not always be 100% accurate.