एपीए उद्धरण

Hensen, F. (1997). Plastics Extrusion technology (2nd ed.). Hanser.

शिकागो स्टाइल उद्धरण

Hensen, Friedhelm. Plastics Extrusion Technology. 2nd ed. Munich: Hanser, 1997.

एमएलए उद्धरण

Hensen, Friedhelm. Plastics Extrusion Technology. 2nd ed. Hanser, 1997.