एपीए उद्धरण

Không rõ. (1980). Gignals and linear systems. NOTNXB.

शिकागो स्टाइल उद्धरण

Không rõ. Gignals and Linear Systems. NOTNXB, 1980.

एमएलए उद्धरण

Không rõ. Gignals and Linear Systems. NOTNXB, 1980.