South Australia Department of Planning, Transport and Infrastructure (September 2019). "Annual Report 2018–19"(PDF). Archived(PDF) from the original on 1 March 2020. Retrieved 12 February 2020.
South Australia Department of Planning, Transport and Infrastructure (September 2019). "Annual Report 2018–19"(PDF). Archived(PDF) from the original on 1 March 2020. Retrieved 12 February 2020.