Robinson, Anthony (10 August 2018). "[Sport] Plessis s'en va déjà" [Plessis is already leaving]. Clicanoo.re (in French). Archived from the original on 30 May 2019. Retrieved 13 January 2021.
Theo, Kostas (11 August 2011). "1860 Munich for Plessis". SentraGoal (in Greek). Archived from the original on 11 September 2011. Retrieved 5 January 2012.
Theo, Kostas (11 August 2011). "1860 Munich for Plessis". SentraGoal (in Greek). Archived from the original on 11 September 2011. Retrieved 5 January 2012.
Robinson, Anthony (10 August 2018). "[Sport] Plessis s'en va déjà" [Plessis is already leaving]. Clicanoo.re (in French). Archived from the original on 30 May 2019. Retrieved 13 January 2021.