एपीए उद्धरण

Stefan Hesse. (2000). Grippers and thei applications. Germany: Festo Didactic.

शिकागो स्टाइल उद्धरण

Stefan Hesse. Grippers and Thei Applications. Germany: Festo Didactic, 2000.

एमएलए उद्धरण

Stefan Hesse. Grippers and Thei Applications. Germany: Festo Didactic, 2000.