Helfrick,Albert D, & Cooper, W. D. (2008). Modern electronic instrumentation and measurement techniques. Prentice Hall of India.
استشهاد بنمط شيكاغوHelfrick,Albert D, و William D. Cooper. Modern Electronic Instrumentation and Measurement Techniques. New Delhi: Prentice Hall of India, 2008.
MLA استشهادHelfrick,Albert D, و William D. Cooper. Modern Electronic Instrumentation and Measurement Techniques. Prentice Hall of India, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.