U.S. Department of Commerce. Bureau of the Census. Costa Rica. U.S. Department of Commerce. Bureau of the Census.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)U.S. Department of Commerce. Bureau of the Census. Costa Rica. Washington, D.C.: U.S. Department of Commerce. Bureau of the Census.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)U.S. Department of Commerce. Bureau of the Census. Costa Rica. U.S. Department of Commerce. Bureau of the Census.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.