एपीए उद्धरण

(1983). Ecological indicators for the assessment of the quality of air, water, soil, and ecosystems: Papers presentyed at a symposium held in Utrecht, October 1982. Dordrecht, Holland: D. Reidel.

शिकागो स्टाइल उद्धरण

Ecological Indicators for the Assessment of the Quality of Air, Water, Soil, and Ecosystems: Papers Presentyed At a Symposium Held in Utrecht, October 1982. Dordrecht, Holland: D. Reidel, 1983.

एमएलए उद्धरण

Ecological Indicators for the Assessment of the Quality of Air, Water, Soil, and Ecosystems: Papers Presentyed At a Symposium Held in Utrecht, October 1982. Dordrecht, Holland: D. Reidel, 1983.