Union Pacific Railroad, a brief history
MLA
Union Pacific Railroad, a Brief History. Rev. printing, Aug. 1949. Omaha, Neb.: Dept. of Public Relations, Union Pacific Railroad, 1949
APA, 7th edition
(1949). Union Pacific Railroad, a brief history. Rev. printing, Aug. 1949. Omaha, Neb.: Dept. of Public Relations, Union Pacific Railroad
Chicago, 17th edition
Union Pacific Railroad, a brief history. Rev. printing, Aug. 1949. Omaha, Neb.: Dept. of Public Relations, Union Pacific Railroad, 1949