U.S. Department of Commerce. Bureau of the Census. Costa Rica. U.S. Department of Commerce. Bureau of the Census.
Cita Chicago Style (17a ed.)U.S. Department of Commerce. Bureau of the Census. Costa Rica. Washington, D.C.: U.S. Department of Commerce. Bureau of the Census.
Cita MLA (9a ed.)U.S. Department of Commerce. Bureau of the Census. Costa Rica. U.S. Department of Commerce. Bureau of the Census.
警告：這些引文格式不一定是100％准確.