APA
Helfrick, . (1998). Modern electronic instrumentation and measurement techniques. Prentice-Hall of India, New Delhi: .
Chicago
Helfrick, . 1998. Modern electronic instrumentation and measurement techniques. Prentice-Hall of India, New Delhi: .
Harvard
Helfrick, . (1998). Modern electronic instrumentation and measurement techniques. Prentice-Hall of India, New Delhi: .
MLA
Helfrick, . Modern electronic instrumentation and measurement techniques. Prentice-Hall of India, New Delhi: . 1998.