Cofnodi Dyfyniadau
Dyfyniad APA
Ayres H. B., Ashe W. W., & Thompson Gilbert. (1904). Land classification map of part of the Southern appalachian region. U. S. Geological Survey.
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Dyfyniad Arddull Chicago
Ayres H. B., Ashe W. W., and Thompson Gilbert. Land Classification Map of Part of the Southern Appalachian Region. U. S. Geological Survey, 1904.
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Dyfyniad MLA
Ayres H. B., et al. Land Classification Map of Part of the Southern Appalachian Region. U. S. Geological Survey, 1904.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.