Robson, James P. (2007). „Local approaches to biodiversity conservation: lessons from Oaxaca, southern Mexico”. International Journal of Sustainable Development. 10 (3): 267. ISSN0960-1406. doi:10.1504/ijsd.2007.017647.
Robson, James P. (2007). „Local approaches to biodiversity conservation: lessons from Oaxaca, southern Mexico”. International Journal of Sustainable Development. 10 (3): 267. ISSN0960-1406. doi:10.1504/ijsd.2007.017647.