Dorling Kindersley Limited. (2015). When on Earth?: History as you've never seen it before (First American edition.). DK Publishing.
Style de citation Chicago (17e éd.)Dorling Kindersley Limited. When on Earth?: History as You've Never Seen It Before. First American edition. New York, New York: DK Publishing, 2015.
Style de citation MLA (8e éd.)Dorling Kindersley Limited. When on Earth?: History as You've Never Seen It Before. First American edition. DK Publishing, 2015.
Attention : ces citations peuvent ne pas être correctes à 100%.