SpringerLink (Online service) & Markussen, M. (2005). Valuation and conservation of biodiversity: Interdisciplinary perspectives on the convention on biological diversity. Springer-Verlag.
Lua i Stíl Chicago (17ú heag.)SpringerLink (Online service) agus Michael Markussen. Valuation and Conservation of Biodiversity: Interdisciplinary Perspectives on the Convention on Biological Diversity. Berlin, Heidelberg: Springer-Verlag, 2005.
Lua MLA (8ú heag.)SpringerLink (Online service) agus Michael Markussen. Valuation and Conservation of Biodiversity: Interdisciplinary Perspectives on the Convention on Biological Diversity. Springer-Verlag, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.