«Appendix A: Asset Inventory». Amtrak Five Year Equipment Asset Line Plan: Base (FY 2019) + Five Year Strategic Plan (FY 2020–2024). Amtrak. 2018. pp. 56-57, 104.
«Attachment 3E: Statement of Work (Febrero de 2014)». Brownfields Property Application: Charlotte Locomotive & Railcar Maintenance Facility. North Carolina Department of Transportation. 9 de septiembre de 2014. p. 2.
Frey, H. Christopher; Graver, Brandon M. (13 de agosto de 2012). «Chapter 2: Rail Yard Testing». Measurement and Evaluation of Fuels and Technologies for Passenger Rail Service in North Carolina. North Carolina Department of Transportation. p. 28.