APA-viite (7. p.)
ebrary, Inc, Nordhaus, W. D., & Kokkelenberg, E. C. (1999). Nature's numbers: Expanding the national economic accounts to include the environment. National Academy Press.
Chicago-viite (17. p.)
ebrary, Inc, William D. Nordhaus, ja Edward Charles Kokkelenberg. Nature's Numbers: Expanding the National Economic Accounts to Include the Environment. Washington, D.C.: National Academy Press, 1999.
MLA-viite (9. p.)
ebrary, Inc, et al. Nature's Numbers: Expanding the National Economic Accounts to Include the Environment. National Academy Press, 1999.
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