Abdullah, Amjad; Muyungi, Richard; Jallow, Bubu; Reazuddin, Mohammed; Konate, Mama(International Institute for Environment and Development (IIED), London, 2009)
Sultana, Parvin; Thompson, Paul M.(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, 2013)
Cull, Robert J.; Hoffman, Philip T.; Hughson, Eric(Division of the Humanities and Social Sciences, California Institute of Technology, Pasadena, CA, 1992)