APA (7e ed.) Bronvermelding
Helfrick, A. D., & Cooper, W. D. (1990). Modern electronic instrumentation and measurement techniques. Prentice Hall of India.
Chicago (17e ed.) Bronvermelding
Helfrick, Albert D., en William D. Cooper. Modern Electronic Instrumentation and Measurement Techniques. New Delhi: Prentice Hall of India, 1990.
MLA (9e ed.) Bronvermelding
Helfrick, Albert D., en William D. Cooper. Modern Electronic Instrumentation and Measurement Techniques. Prentice Hall of India, 1990.
Let op: Deze citaties zijn niet altijd 100% accuraat.