Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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