COUCH LEON W. (2009). DIGITAL AND ANALOG COMMUNICATION SYSTEMS 7TH ED (7TH ED.). PEARSON EDUCATION.
芝加哥风格引文COUCH LEON W. DIGITAL AND ANALOG COMMUNICATION SYSTEMS 7TH ED. 7TH ED. INDIA: PEARSON EDUCATION, 2009.
MLA引文COUCH LEON W. DIGITAL AND ANALOG COMMUNICATION SYSTEMS 7TH ED. 7TH ED. PEARSON EDUCATION, 2009.
警告：这些引文格式不一定是100％准确.