APA-referens (7:e uppl.)
ebrary, Inc, Croitoru, L., & Sarraf, M. (2010). The cost of environmental degradation: Case studies from the Middle East and North Africa. World Bank.
Chicago-referens (17:e uppl.)
ebrary, Inc, Lelia Croitoru, och Maria Sarraf. The Cost of Environmental Degradation: Case Studies from the Middle East and North Africa. Washington, D.C.: World Bank, 2010.
MLA-referens (9:e uppl.)
ebrary, Inc, et al. The Cost of Environmental Degradation: Case Studies from the Middle East and North Africa. World Bank, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.