1. Recent developments in traffic noise control;Apps;Noise Control,1957
2. ATA (American Transit Association). Transit fact book. 1966 edition.
3. BART (San Francisco Bay Area Rapid Transit District). Architectural standards. June 1965.
4. BBN (Bolt, Beranek and Newman, Inc.). Literature survey for the F.H.A. contract on urban noise. Cambridge, Mass., January 1967.
5. CHP (California Highway Patrol). Passenger car noise survey. January 1970.