[1] 24 Ekim 2012 tarihinde Wayback Machine sitesinde arşivlendi. "WiserEarth tracks the work of nonprofits around the world" by Elsa Wenzel cnet news, October 21, 2007
[1] 24 Ekim 2012 tarihinde Wayback Machine sitesinde arşivlendi. "WiserEarth tracks the work of nonprofits around the world" by Elsa Wenzel cnet news, October 21, 2007