National Research Council (U.S.). Committee on Strategic Directions for the Geographical Sciences in the Next Decade & ebrary, Inc. (2010). Understanding the changing planet: Strategic directions for the geographical sciences. National Academies Press.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումNational Research Council (U.S.). Committee on Strategic Directions for the Geographical Sciences in the Next Decade and Inc ebrary. Understanding the Changing Planet: Strategic Directions for the Geographical Sciences. Washington, D.C.: National Academies Press, 2010.
MLA (9րդ խմբ.) ՄեջբերումNational Research Council (U.S.). Committee on Strategic Directions for the Geographical Sciences in the Next Decade and Inc ebrary. Understanding the Changing Planet: Strategic Directions for the Geographical Sciences. National Academies Press, 2010.