Dorling Kindersley. (2001). Ultimate Visual Dictionary: 21st Century Supplement (21st Century Supplement.). Dorling Kindersley.
Citazione stile Chigago Style (17a edizione)Dorling Kindersley. Ultimate Visual Dictionary: 21st Century Supplement. 21st Century Supplement. London ; New York: Dorling Kindersley, 2001.
Citatione MLA (9a ed.)Dorling Kindersley. Ultimate Visual Dictionary: 21st Century Supplement. 21st Century Supplement. Dorling Kindersley, 2001.
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