O`Connor, M., & Schoer, K. (2009). Environmental degradation in the new SEEA: Proposals for a systematic presentation of environmental degradation in the framework of EEA. Statistisches Bundesamt.
Chicago-referens (17:e uppl.)O`Connor, Martin, och Karl Schoer. Environmental Degradation in the New SEEA: Proposals for a Systematic Presentation of Environmental Degradation in the Framework of EEA. Wiesbaden: Statistisches Bundesamt, 2009.
MLA-referens (8:e uppl.)O`Connor, Martin, och Karl Schoer. Environmental Degradation in the New SEEA: Proposals for a Systematic Presentation of Environmental Degradation in the Framework of EEA. Statistisches Bundesamt, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.