Dahomey, official standard names approved by the U. S. Board on Geographic Names
In: http://hdl.handle.net/2027/pst.000015194589
"U.S. Government Printing Office: 1978--726-335/1518"--P. 89. ; "Prepared in the Office of Geography, Department of the Interior, Washington, D.C., July 1965." ; Mode of access: Internet.