www.gao.govArhivirano 2020-02-29 na Wayback Machine-u, "U.S. General Accounting Office Report, U.S. Insular Areas: application of the U.S. Constitution, November 1997, p. 1, 6, 39n.", pristupljeno 4. svibnja 2016.
state.gov
www.state.gov, "Dependencies and Areas of Special Sovereignty", objavljeno 29. studenog 2011., pristupljeno 4. svibnja 2016.
web.archive.org
www.gao.govArhivirano 2020-02-29 na Wayback Machine-u, "U.S. General Accounting Office Report, U.S. Insular Areas: application of the U.S. Constitution, November 1997, p. 1, 6, 39n.", pristupljeno 4. svibnja 2016.