Arthur D. Little, Inc. (1968). Cost-effectiveness in traffic safety. F.A. Praeger.
Lua i Stíl Chicago (17ú heag.)Arthur D. Little, Inc. Cost-effectiveness in Traffic Safety. New York: F.A. Praeger, 1968.
Lua MLA (9ú heag.)Arthur D. Little, Inc. Cost-effectiveness in Traffic Safety. F.A. Praeger, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.