Cita APA (7th ed.)
(1978). World Survey of current research and development on roads and road transport: A report covering an inventory of 59 countries. Internat. Road Fed.
Cita Chicago (17th ed.)
World Survey of Current Research and Development on Roads and Road Transport: A Report Covering an Inventory of 59 Countries. Washington, D.C: Internat. Road Fed, 1978.
Cita MLA (9th ed.)
World Survey of Current Research and Development on Roads and Road Transport: A Report Covering an Inventory of 59 Countries. Internat. Road Fed, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.