APA-viite

Helfrick, A. D. (1977). Modern electronic instrumentation and measurement techniques. Prentice-Hall of India.

Chicago-tyylinen lähdeviittaus

Helfrick, Albert D. Modern Electronic Instrumentation and Measurement Techniques. New Delhi: Prentice-Hall of India, 1977.

MLA-viite

Helfrick, Albert D. Modern Electronic Instrumentation and Measurement Techniques. Prentice-Hall of India, 1977.