Jagger, Pamela(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, USA, 2008)
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)