Ensink, Jeroen H. J.; Aslam, M. Rizwan; Konradsen, Flemming; Jensen, Peter K.; Van Der Hoek, Wim(International Water Management Institute, Colombo, Sri Lanka, 2002)
Komarudin, Heru; Siagian, Yuliana L.; Oka, Ngakan Putu(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington , DC , USA, 2007)
Koontz, Tomas; Carlson, Laura; Schweik, Charles M.(Center for the Study of Institutions, Population, and Environmental Change (CIPEC), Indiana University, Bloomington, IN, 1998)
Goh, Amelia H. X.(CGIAR Systemwide Program on Collective Action and Property Rights (CAPRi), International Food Policy Research Institute, Washington, DC, 2012)