Figueiredo, Sheila (1 June 2005). "Silas e Sandro já garantidos" [Silas and Sandro already confirmed]. Record (in Portuguese). Archived from the original on 11 July 2015. Retrieved 9 July 2015.
"SAD não deixa sair Silas" [PLSC does not let Silas go]. Record (in Portuguese). 30 January 2008. Archived from the original on 11 July 2015. Retrieved 9 July 2015.
Figueiredo, Sheila (1 June 2005). "Silas e Sandro já garantidos" [Silas and Sandro already confirmed]. Record (in Portuguese). Archived from the original on 11 July 2015. Retrieved 9 July 2015.
"SAD não deixa sair Silas" [PLSC does not let Silas go]. Record (in Portuguese). 30 January 2008. Archived from the original on 11 July 2015. Retrieved 9 July 2015.