Cooper, W., & Helfrick, A. (1985). Electronic instrumentation and measurement techniques (3rd ed.). Prentice-Hall of India.
Citazione stile Chigago Style (17a edizione)Cooper, W.D, e A.D Helfrick. Electronic Instrumentation and Measurement Techniques. 3rd ed. New Delhi: Prentice-Hall of India, 1985.
Citatione MLA (9a ed.)Cooper, W.D, e A.D Helfrick. Electronic Instrumentation and Measurement Techniques. 3rd ed. Prentice-Hall of India, 1985.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.