APA引文

Maps.com (Firm) & ebrary, Inc. (1999). Independence dates for countries of the world, 1999. Maps.com.

Chicago Style (17th ed.) Citation

Maps.com (Firm) and Inc ebrary. Independence Dates for Countries of the World, 1999. [S.l.]: Maps.com, 1999.

MLA引文

Maps.com (Firm) and Inc ebrary. Independence Dates for Countries of the World, 1999. Maps.com, 1999.