Wolter,Debra. (2008). Concise atlas of the world:digital mapping for the 21st century: Maps, Facts, Terrain Models, Pictures. Dorling kindersley Limited (DK).
Chicago-viite (17. p.)Wolter,Debra. Concise Atlas of the World:digital Mapping for the 21st Century: Maps, Facts, Terrain Models, Pictures. London: Dorling kindersley Limited (DK), 2008.
MLA-viite (8. p.)Wolter,Debra. Concise Atlas of the World:digital Mapping for the 21st Century: Maps, Facts, Terrain Models, Pictures. Dorling kindersley Limited (DK), 2008.
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