Παραπομπή APA

National Cooperative Highway Research Program. National Research Council. IDEA. Washington: National Research Council, Transportation Research Board.

Παραπομπή Chicago Style

National Cooperative Highway Research Program. National Research Council. IDEA. Washington: National Research Council, Transportation Research Board.

Παραπομπή MLA

National Cooperative Highway Research Program. National Research Council. IDEA. Washington: National Research Council, Transportation Research Board.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.