Haas, T. (2011). Improving natural resource management: Ecological and political models. John Wiley & Sons Inc..
Chicago-referens (17:e uppl.)Haas, Timothy. Improving Natural Resource Management: Ecological and Political Models. Chichester, West Sussex: John Wiley & Sons Inc., 2011.
MLA-referens (9:e uppl.)Haas, Timothy. Improving Natural Resource Management: Ecological and Political Models. John Wiley & Sons Inc., 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.