Klein, M. (2006). Union Pacific: Volume II, 1894-1969. Ebrary, Incorporated [distributor].
Cita Chicago Style (17a ed.)Klein, Maury. Union Pacific: Volume II, 1894-1969. Palo Alto: Ebrary, Incorporated [distributor], 2006.
Cita MLA (8a ed.)Klein, Maury. Union Pacific: Volume II, 1894-1969. Ebrary, Incorporated [distributor], 2006.
Precaución: Estas citas no son 100% exactas.