APA (7e ed.) Bronvermelding

(1977). A semi-automated pulse-echo ultrasonic system for inspecting tires / Robert P. Ryan ; prepared for U.S. Department of Transportation, National Highway Traffic Safety Administration, Office of Research and Development.

Chicago (17e ed.) Bronvermelding

A Semi-automated Pulse-echo Ultrasonic System for Inspecting Tires / Robert P. Ryan ; Prepared for U.S. Department of Transportation, National Highway Traffic Safety Administration, Office of Research and Development. 1977.

MLA (9e ed.) Bronvermelding

A Semi-automated Pulse-echo Ultrasonic System for Inspecting Tires / Robert P. Ryan ; Prepared for U.S. Department of Transportation, National Highway Traffic Safety Administration, Office of Research and Development. 1977.