Table 1. Annual Estimates of the Resident Population for the United States, Regions, States, and Puerto Rico: April 1, 2010 to July 1, 2016 (NST-EST2016-01) [online]. United States Census Bureau, Population Division, 2016-12 [cit. 2017-03-06]. Dostupné online. (anglicky)
Great Lakes Length of Shoreline in Separate Basin [online]. Census.gov [cit. 2016-10-31]. Dostupné online. (anglicky)