(1965). Highway statistics 1963. Washington, D.C: United States goverment printing office.
Παραπομπή Chicago StyleHighway Statistics 1963. Washington, D.C: United States goverment printing office, 1965.
Παραπομπή MLAHighway Statistics 1963. Washington, D.C: United States goverment printing office, 1965.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.