APA
World Book I., . (2010). Atlas of the world. Chicago, IL: World Book, Inc.
Chicago
World Book Inc, . 2010. Atlas of the world. Chicago, IL: World Book, Inc.
Harvard
World Book I., . (2010). Atlas of the world. Chicago, IL: World Book, Inc.
MLA
World Book Inc, . Atlas of the world. Chicago, IL: World Book, Inc. 2010.