Gem citationer
APA (7th ed.) Citation
Douglas E. M. (1929). Map of Yosemite valley. U. S. Geological Survey.
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Chicago Style (17th ed.) Citation
Douglas E. M. Map of Yosemite Valley. U. S. Geological Survey, 1929.
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MLA (9th ed.) Citation
Douglas E. M. Map of Yosemite Valley. U. S. Geological Survey, 1929.
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