(2020). Secrets of the National Parks: The expert's guide to the best experiences beyond the tourist trail (Second edition.). National Geographic Society.
Style de citation Chicago (17e éd.)Secrets of the National Parks: The Expert's Guide to the Best Experiences Beyond the Tourist Trail. Second edition. Washington, D.C.: National Geographic Society, 2020.
Style de citation MLA (8e éd.)Secrets of the National Parks: The Expert's Guide to the Best Experiences Beyond the Tourist Trail. Second edition. National Geographic Society, 2020.
Attention : ces citations peuvent ne pas être correctes à 100%.