Kreps, E. H. (1910). Camp and trail methods: Interesting information for all lovers of nature, what to take and what to do. Harding.
Citace podle Chicago (17th ed.)Kreps, Elmer Harry. Camp and Trail Methods: Interesting Information for All Lovers of Nature, What to Take and What to Do. Columbus, Ohio: Harding, 1910.
Citace podle MLA (8th ed.)Kreps, Elmer Harry. Camp and Trail Methods: Interesting Information for All Lovers of Nature, What to Take and What to Do. Harding, 1910.
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