Landon, C. E. (1951). Transportation; principles, practices, problems. Sloane.
Lua i Stíl Chicago (17ú heag.)Landon, Charles Edward. Transportation; Principles, Practices, Problems. New York: Sloane, 1951.
Lua MLA (9ú heag.)Landon, Charles Edward. Transportation; Principles, Practices, Problems. Sloane, 1951.
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