3Marschalek, ilse, The concept of participatory local sustainability projects in seven Chinese villages. Journal of Environmental Management (2007), doi : 10. 1016/j. jenvman. 2006.09. 026.
4Jones, C. , 1996. A Compilation of PRA Methods. Institute of Development Studies, University of Sussex. Levine, R. S. , et al., 1999.