United States. Railroad Retirement Board. Bureau of the Actuary. Total employment by state and last railroad employer. Railroad Retirement Board, Bureau of the Actuary.
Chicago Style (17th ed.) CitationUnited States. Railroad Retirement Board. Bureau of the Actuary. Total Employment by State and Last Railroad Employer. [Chicago, Ill.]: Railroad Retirement Board, Bureau of the Actuary.
MLA (9th ed.) CitationUnited States. Railroad Retirement Board. Bureau of the Actuary. Total Employment by State and Last Railroad Employer. Railroad Retirement Board, Bureau of the Actuary.
Warning: These citations may not always be 100% accurate.