APA
Bergesen H. O., Parmann G. & Thommessen O. B. (2009). yearbook of international cooperation on environment and development 1999/2000. London: Earthscan.
Chicago
Bergesen Helge Ole, Parmann Georg and Thommessen Oystein B. 2009. yearbook of international cooperation on environment and development 1999/2000. London: Earthscan.
Harvard
Bergesen H. O., Parmann G. and Thommessen O. B. (2009). yearbook of international cooperation on environment and development 1999/2000. London: Earthscan.
MLA
Bergesen Helge Ole, Parmann Georg and Thommessen Oystein B. yearbook of international cooperation on environment and development 1999/2000. London: Earthscan. 2009.
