Παραπομπή APA

Helfrick,Albert D, & Cooper, W. D. (2008). Modern electronic instrumentation and measurement techniques. Prentice Hall of India.

Παραπομπή Chicago Style

Helfrick,Albert D, και William D. Cooper. Modern Electronic Instrumentation and Measurement Techniques. New Delhi: Prentice Hall of India, 2008.

Παραπομπή MLA

Helfrick,Albert D, και William D. Cooper. Modern Electronic Instrumentation and Measurement Techniques. Prentice Hall of India, 2008.