Citazione Stile APA (7a Edizione)
ebrary, Inc. (2002). Down to earth: Georgraphic information for sustainable development in Africa. National Academy Press.
Citazione stile Chigago Style (17a edizione)
ebrary, Inc. Down to Earth: Georgraphic Information for Sustainable Development in Africa. Washington, D.C.: National Academy Press, 2002.
Citatione MLA (9a ed.)
ebrary, Inc. Down to Earth: Georgraphic Information for Sustainable Development in Africa. National Academy Press, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.