APA (7th ed.) Citation

Cooper/ Helfrick. (1989). Electronic Instrumention Mesurment Techniques. PHI.

Chicago Style (17th ed.) Citation

Cooper/ Helfrick. Electronic Instrumention Mesurment Techniques. New Delhi: PHI, 1989.

MLA (9th ed.) Citation

Cooper/ Helfrick. Electronic Instrumention Mesurment Techniques. PHI, 1989.