एपीए उद्धरण

Penn, W. (1966). GRP technology: Handbook to the polyester/glass fibre plastics industry. Maclaren.

शिकागो स्टाइल उद्धरण

Penn, W.S. GRP Technology: Handbook to the Polyester/glass Fibre Plastics Industry. London: Maclaren, 1966.

एमएलए उद्धरण

Penn, W.S. GRP Technology: Handbook to the Polyester/glass Fibre Plastics Industry. Maclaren, 1966.