1-STEWARDSHIP
http://www.productstewardship.us/
2-SERVICE DOMINANT LOGIC
ARTICULO
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.646.2828&rep=rep1&type=pdf
THE NATURAL STEP FRAMEWORK
http://www.thenaturalstep.org/our-approach/
CAPITAL NATURAL
https://drive.google.com/file/d/0B7EEwIm6cDjMOVdrc044dHV6eVk/view
https://drive.google.com/file/d/0B7EEwIm6cDjMczV4eTc1eVllTzA/view
https://drive.google.com/file/d/0B7EEwIm6cDjMUkpMV05ZOUpFQVE/view
PRODUCTOS
http://www.seventhgeneration.com/
https://www.wholefoodsmarket.com/company-info
http://www.sokolblosser.com/about/sustainability.html
C2C
http://www.c2ccertified.org/images/uploads/C2CCertified_Product_Standard_V3_121112.pdf
http://www.ecointeligencia.com/tag/cradle-to-cradle/