एपीए उद्धरण

(1996). Laboratory equipment 1995/96. Siber Hegner: Heraeus.

शिकागो स्टाइल उद्धरण

Laboratory Equipment 1995/96. Siber Hegner: Heraeus, 1996.

एमएलए उद्धरण

Laboratory Equipment 1995/96. Siber Hegner: Heraeus, 1996.