APA-referens

Helfrick, A. D., & Cooper, W. D. (1990). Modern electronic instrumentation and measurements techniques. PHI.

Chicago-stil citat

Helfrick, Albert D., och Wlliam D. Cooper. Modern Electronic Instrumentation and Measurements Techniques. New Delhi: PHI, 1990.

MLA-referens

Helfrick, Albert D., och Wlliam D. Cooper. Modern Electronic Instrumentation and Measurements Techniques. PHI, 1990.