OPPENHEIM ,ALAN V. (1997). SIGNALS & SYSTEMS: 2ND ED. PHI.
芝加哥风格引文OPPENHEIM ,ALAN V. SIGNALS & SYSTEMS: 2ND ED. NEW DELHI: PHI, 1997.
MLA引文OPPENHEIM ,ALAN V. SIGNALS & SYSTEMS: 2ND ED. PHI, 1997.
警告：这些引文格式不一定是100％准确.
APA引文