↑Francis, Ellen. „Global freedoms have hit a ʻdismal’ record low, with pandemic restrictions making things worse, report says“ (en-US). The Washington Post (10-fevral 2022-yil). Qaraldi: 18-fevral 2022-yil.
↑„Historical Census Statistics On Population Totals By Race, 1790 to 1990, and By Hispanic Origin, 1970 to 1990, For Large Cities And Other Urban Places In The United States“. census.gov. 12-avgust 2012-yilda asl nusxadan arxivlandi. Qaraldi: 28-may 2013-yil.
