(1965). High priority research tasks for high speed ground transport. Cambridge, MA.: Department of Commerce.
Παραπομπή Chicago StyleHigh Priority Research Tasks for High Speed Ground Transport. Cambridge, MA.: Department of Commerce, 1965.
Παραπομπή MLAHigh Priority Research Tasks for High Speed Ground Transport. Cambridge, MA.: Department of Commerce, 1965.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.