Johnson, E. R. (1909). Elements of transportation: A discussion of steam railroad electric railway, and ocean and inland water transportation. Appleton.
Chicago-Zitierstil (17. Ausg.)Johnson, Emory R. Elements of Transportation: A Discussion of Steam Railroad Electric Railway, and Ocean and Inland Water Transportation. New York u.a: Appleton, 1909.
MLA-Zitierstil (9. Ausg.)Johnson, Emory R. Elements of Transportation: A Discussion of Steam Railroad Electric Railway, and Ocean and Inland Water Transportation. Appleton, 1909.
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