Johns, D. (2009). A new conservation politics: Power, organization building, and effectiveness. Wiley-Blackwell.
Lua i Stíl Chicago (17ú heag.)Johns, David. A New Conservation Politics: Power, Organization Building, and Effectiveness. Chichester, UK ; Hoboken, NJ: Wiley-Blackwell, 2009.
Lua MLA (9ú heag.)Johns, David. A New Conservation Politics: Power, Organization Building, and Effectiveness. Wiley-Blackwell, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.