APA-viite (7. p.)

Helfrick, A. D., & Cooper, W. D. (1990). Modern electronic instrumentation and measurement techniques. Prentice Hall of India ; Prentice Hall.

Chicago-viite (17. p.)

Helfrick, Albert D., ja William David Cooper. Modern Electronic Instrumentation and Measurement Techniques. New Delhi : Englewood Cliffs, N.J.: Prentice Hall of India ; Prentice Hall, 1990.

MLA-viite (8. p.)

Helfrick, Albert D., ja William David Cooper. Modern Electronic Instrumentation and Measurement Techniques. Prentice Hall of India ; Prentice Hall, 1990.