Forest Certification: Roots Issues, Challenges, And Benefits. Boca Raton: CRC Press.. 1999.
A Non-Value Based Framework For Assesing Ecosystem Integrity. Portland, OR: USDA, Forest Service.Pacfic Northwest Research Station. http://eurekamag.com/research/003/624/003624530.php.. 1999.
“Linking Social And Natural Science Spatial Scales”. In Integrating Landscape Ecology in to Natural Resorce Management, Integrating Landscape Ecology in to Natural Resorce Management, Cambridge University Press.. 1998.