MacDicken, Kenneth (2013-03-15). "Forest Resources Assessment Working Paper 180"(PDF). Rome: Food and Agriculture Organization of the United Nations Forestry Department. Retrieved 2014-11-16.
forestfacts.org
Menzies, Nicholas; Grinspoon, Elisabeth (2007-10-22). "Facts on Forests and Forestry". ForestFacts.org, a subsidiary of GreenFacts.org. Retrieved 2014-11-16.
Watson, Robert T.; Verardo, David J.; Noble, Ian R.; Bolin, Bert; Ravindranath, N.H.; Dokken, David J., eds. (2000). "Land Use, Land-Use Change and Forestry". Intergovernmental Panel on Climate Change. Archived from the original on 2014-11-29. Retrieved 2014-11-16.
Watson, Robert T.; Verardo, David J.; Noble, Ian R.; Bolin, Bert; Ravindranath, N.H.; Dokken, David J., eds. (2000). "Land Use, Land-Use Change and Forestry". Intergovernmental Panel on Climate Change. Archived from the original on 2014-11-29. Retrieved 2014-11-16.