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