Cooper/ Helfrick. (1989). Electronic Instrumention Mesurment Techniques. PHI.
芝加哥风格引文Cooper/ Helfrick. Electronic Instrumention Mesurment Techniques. New Delhi: PHI, 1989.
MLA引文Cooper/ Helfrick. Electronic Instrumention Mesurment Techniques. PHI, 1989.
警告：这些引文格式不一定是100％准确.