एपीए उद्धरण

Krauger, P. (1973). Geothermal energy: Resources production, stimulation. Standard.

शिकागो स्टाइल उद्धरण

Krauger, Paul. Geothermal Energy: Resources Production, Stimulation. Carel Ottle: Standard, 1973.

एमएलए उद्धरण

Krauger, Paul. Geothermal Energy: Resources Production, Stimulation. Standard, 1973.