"Mitchell Joins Hearts". heartsfc.co.uk. Heart of Midlothian FC. 11 January 2018. Archived from the original on 12 January 2018. Retrieved 11 January 2018.
"Demi Returns". heartsfc.co.uk. Heart of Midlothian FC. 28 August 2018. Archived from the original on 29 August 2018. Retrieved 28 August 2018.
"Mitchell Joins Hearts". heartsfc.co.uk. Heart of Midlothian FC. 11 January 2018. Archived from the original on 12 January 2018. Retrieved 11 January 2018.
"Demi Returns". heartsfc.co.uk. Heart of Midlothian FC. 28 August 2018. Archived from the original on 29 August 2018. Retrieved 28 August 2018.