Federal motor vehicle safety standards including import regulations :
issued as of March 31, 1971.

APA Citation

United States. National Highway Traffic Safety Administration. (1971). Federal motor vehicle safety standards including import regulations: issued as of March 31, 1971. Washington, D.C.: U. S. Govt. Print. Off..

MLA Citation

United States. National Highway Traffic Safety Administration. Federal Motor Vehicle Safety Standards Including Import Regulations: Issued As of March 31, 1971. Washington, D.C.: U. S. Govt. Print. Off., 1971.