Maps.com (Firm) & ebrary, Inc. (1999). Independence dates for countries of the world, 1999. Maps.com.
Chicago-viite (17. p.)Maps.com (Firm) ja Inc ebrary. Independence Dates for Countries of the World, 1999. [S.l.]: Maps.com, 1999.
MLA-viite (9. p.)Maps.com (Firm) ja Inc ebrary. Independence Dates for Countries of the World, 1999. Maps.com, 1999.
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