Oliver, S. H., & Berkebile, D. H. (1974). Wheels and wheeling: The smithsonian cycle collection. Washington, D.C: Smithsonian Institution Press.
Παραπομπή Chicago StyleOliver, Smith Hempstone, and Donald H. Berkebile. Wheels and Wheeling: The Smithsonian Cycle Collection. Washington, D.C: Smithsonian Institution Press, 1974.
Παραπομπή MLAOliver, Smith Hempstone, and Donald H. Berkebile. Wheels and Wheeling: The Smithsonian Cycle Collection. Washington, D.C: Smithsonian Institution Press, 1974.
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