Không rõ. (1999). Digital Transmission Engineering. NOTNXB.
Trích dẫn kiểu ChicagoKhông rõ. Digital Transmission Engineering. NOTNXB, 1999.
MLA引文Không rõ. Digital Transmission Engineering. NOTNXB, 1999.
警告：这些引文格式不一定是100％准确.
APA引文