U.S. Department of Commerce. Bureau of the Census. Costa Rica. U.S. Department of Commerce. Bureau of the Census.
Chicago-viite (17. p.)U.S. Department of Commerce. Bureau of the Census. Costa Rica. Washington, D.C.: U.S. Department of Commerce. Bureau of the Census.
MLA-viite (9. p.)U.S. Department of Commerce. Bureau of the Census. Costa Rica. U.S. Department of Commerce. Bureau of the Census.
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