SpringerLink (Online service) & Markussen, M. (2005). Valuation and conservation of biodiversity: Interdisciplinary perspectives on the convention on biological diversity. Springer-Verlag.
Chicago-viite (17. p.)SpringerLink (Online service) ja Michael Markussen. Valuation and Conservation of Biodiversity: Interdisciplinary Perspectives on the Convention on Biological Diversity. Berlin, Heidelberg: Springer-Verlag, 2005.
MLA-viite (8. p.)SpringerLink (Online service) ja Michael Markussen. Valuation and Conservation of Biodiversity: Interdisciplinary Perspectives on the Convention on Biological Diversity. Springer-Verlag, 2005.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.