Cita APA (7th ed.)

Permanent International Association of Road Congresses (6è : 1930 : Washington DC). (1930). Daily Bulletin: Of the Sixth Congress of the Permanent International Association of Road Congresses. U.S. Government Printing Office.

Cita Chicago (17th ed.)

Permanent International Association of Road Congresses (6è : 1930 : Washington DC). Daily Bulletin: Of the Sixth Congress of the Permanent International Association of Road Congresses. Washington: U.S. Government Printing Office, 1930.

Cita MLA (9th ed.)

Permanent International Association of Road Congresses (6è : 1930 : Washington DC). Daily Bulletin: Of the Sixth Congress of the Permanent International Association of Road Congresses. U.S. Government Printing Office, 1930.