एपीए उद्धरण

Không rõ. (1993). Digital and Anolog Communication Systems. NOTNXB.

शिकागो स्टाइल उद्धरण

Không rõ. Digital and Anolog Communication Systems. NOTNXB, 1993.

एमएलए उद्धरण

Không rõ. Digital and Anolog Communication Systems. NOTNXB, 1993.