Metz, H. C., Library Of Congress. Federal Research Division & Thomas Leiper Kane Collection. (1993) Somalia: A Country Study. Washington, D.C.: Federal Research Divsion, Library of Congress: For sale by the Supt. of Docs., U.S. G.P.O. [Pdf] Retrieved from the Library of Congress, https://www.loc.gov/item/93016246/. (記述はImage 21、本では17ページ)
Metz, H. C., Library Of Congress. Federal Research Division & Thomas Leiper Kane Collection. (1993) Somalia: A Country Study. Washington, D.C.: Federal Research Divsion, Library of Congress: For sale by the Supt. of Docs., U.S. G.P.O. [Pdf] Retrieved from the Library of Congress, https://www.loc.gov/item/93016246/. (Image21)