एपीए उद्धरण

Không rõ. (2000). Product Design and Development. NOTNXB.

शिकागो स्टाइल उद्धरण

Không rõ. Product Design and Development. NOTNXB, 2000.

एमएलए उद्धरण

Không rõ. Product Design and Development. NOTNXB, 2000.