Kemp, E. L., Metz, L. E., & Kapsch, R. J. (2014). Transportation and technology (First edition.). West Virginia University Press.
Lua i Stíl Chicago (17ú heag.)Kemp, Emory L., Lance E. Metz, agus Robert J. Kapsch. Transportation and Technology. First edition. Morgantown, West Virginia: West Virginia University Press, 2014.
Lua MLA (9ú heag.)Kemp, Emory L., et al. Transportation and Technology. First edition. West Virginia University Press, 2014.
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