APA
Albert D. Helfrick, Cooper W.D, . (2006). Modern Electronic Instrumentation and Mesurements. New Delhi: PHI.
Chicago
Albert D. Helfrick, Cooper W.D, . 2006. Modern Electronic Instrumentation and Mesurements. New Delhi: PHI.
Harvard
Albert D. Helfrick, Cooper W.D, . (2006). Modern Electronic Instrumentation and Mesurements. New Delhi: PHI.
MLA
Albert D. Helfrick, Cooper W.D, . Modern Electronic Instrumentation and Mesurements. New Delhi: PHI. 2006.