एपीए उद्धरण

Penn, W., & Titow, W. V. L. (1971). PVC Technology (3rd ed.). Applied Science Publishers.

शिकागो स्टाइल उद्धरण

Penn, W.S, और W V Lenham Titow. PVC Technology. 3rd ed. London: Applied Science Publishers, 1971.

एमएलए उद्धरण

Penn, W.S, और W V Lenham Titow. PVC Technology. 3rd ed. Applied Science Publishers, 1971.