References
- Hutchinson , C. F. 2001 . Famine and famine early warning: Some contributions by geographers . Yearbook of the Association of Pacific Coast Geographers , 63 : 139 – 44 .
- Moseley , W. G. and Logan , B. I. 2005 . “ Food security ” . In Toward a new map of Africa , Edited by: Wisner , B. , Toulmin , C. and Chitiga , R. 133 – 52 . Sterling, VA : Earthscan .
- National Research Council . 2010 . Understanding the changing planet: Strategic directions for the geographical sciences. , Washington, DC : National Academies Press .