Pettigrew, J. B. (1874). Animal locomotion on walking, swimming, and flying, with a dissertation on aeronautics. D. Appleton.
Citace podle Chicago (17th ed.)Pettigrew, J. Bell. Animal Locomotion on Walking, Swimming, and Flying, with a Dissertation on Aeronautics. New York: D. Appleton, 1874.
Citace podle MLA (9th ed.)Pettigrew, J. Bell. Animal Locomotion on Walking, Swimming, and Flying, with a Dissertation on Aeronautics. D. Appleton, 1874.
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