Ravera, O. (1989). Ecological assessment of environmental degradation, pollution and recovery: Lectures of a course held at the joint Research Center, Ispra Italy 12-16 octuber 1987. Elsevier.
Chicago-Zitierstil (17. Ausg.)Ravera, Oscar. Ecological Assessment of Environmental Degradation, Pollution and Recovery: Lectures of a Course Held at the Joint Research Center, Ispra Italy 12-16 Octuber 1987. Amsterdam: Elsevier, 1989.
MLA-Zitierstil (9. Ausg.)Ravera, Oscar. Ecological Assessment of Environmental Degradation, Pollution and Recovery: Lectures of a Course Held at the Joint Research Center, Ispra Italy 12-16 Octuber 1987. Elsevier, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.