Cooper, W., & Helfrick, A. (1985). Electronic instrumentation and measurement techniques (3rd ed.). Prentice-Hall of India.
Citace podle Chicago (17th ed.)Cooper, W.D, a A.D Helfrick. Electronic Instrumentation and Measurement Techniques. 3rd ed. New Delhi: Prentice-Hall of India, 1985.
Citace podle MLA (9th ed.)Cooper, W.D, a A.D Helfrick. Electronic Instrumentation and Measurement Techniques. 3rd ed. Prentice-Hall of India, 1985.
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