Sergio Viotti (footballer) (English Wikipedia)

"Ufficiale il portiere Sergio Viotti" (in Italian). AC Monza Brianza 1912. 10 July 2014. Archived from the original on 14 July 2014. Retrieved 11 July 2014.
"Ufficiali le rescissioni di Zigoni, Anastasi e Viotti" (in Italian). A.C. Monza Brianza 1912. 8 January 2015. Archived from the original on 9 January 2015.

bresciacalcio.it

"Ufficiale, Sergio Viotti alla Triestina". Brescia Calcio (in Italian). 9 August 2010. Archived from the original on 27 December 2010. Retrieved 14 September 2010.

"Official: Yamga to Siena and Ekuban to Renate". A.C. ChievoVerona. 6 August 2015. Retrieved 19 December 2015.

"Facchinetti al Chievo, Viotti al Grosseto" (in Italian). AC ChievoVerona. 31 January 2012. Retrieved 11 July 2014.
"Sergio Viotti alla Cremonese" (in Italian). AC ChievoVerona. 8 January 2013. Retrieved 11 July 2014.
"Sergio Viotti alla Juve Stabia" (in Italian). AC ChievoVerona. 16 July 2013. Archived from the original on 14 July 2014. Retrieved 11 July 2014.

"Balotelli on Inter Channel: "Very happy"". FC Internazionale Milano. www.inter.it. 14 April 2008. Retrieved 29 August 2011.

"Comunicati Stampa n° 12 Allegato (2008–09)". Lega Calcio (in Italian). 8 August 2008. Retrieved 29 August 2011.
"Comunicati Stampa n° 8 Allegato (2006–07)". Lega Calcio (in Italian). 18 August 2006. Retrieved 29 August 2011.

"Risolte a favore della Triestina le compartecipazioni di Brosco, D'Aiello, Pezzi e Viotti". US Triestina Calcio (in Italian). 24 June 2011. Archived from the original on 27 September 2011. Retrieved 29 August 2011.
"Ultimo giorno di calcio mercato: le ultime operazioni dell'U.S. Triestina Calcio". US Triestina Calcio (in Italian). 31 August 2011. Archived from the original on 14 October 2011. Retrieved 27 October 2011.

"UFFICIALE: Brescia, rientrano quattro giocatori". Tutto Mercato Web (in Italian). 26 June 2008. Retrieved 29 August 2011.

"Sergio Viotti in prestito dal Chievo Verona" (in Italian). US Cremonese. 8 January 2013. Retrieved 11 July 2014.

"Ufficiale, Sergio Viotti alla Triestina". Brescia Calcio (in Italian). 9 August 2010. Archived from the original on 27 December 2010. Retrieved 14 September 2010.
"Risolte a favore della Triestina le compartecipazioni di Brosco, D'Aiello, Pezzi e Viotti". US Triestina Calcio (in Italian). 24 June 2011. Archived from the original on 27 September 2011. Retrieved 29 August 2011.
"Ultimo giorno di calcio mercato: le ultime operazioni dell'U.S. Triestina Calcio". US Triestina Calcio (in Italian). 31 August 2011. Archived from the original on 14 October 2011. Retrieved 27 October 2011.
"Sergio Viotti alla Juve Stabia" (in Italian). AC ChievoVerona. 16 July 2013. Archived from the original on 14 July 2014. Retrieved 11 July 2014.
"Ufficiale il portiere Sergio Viotti" (in Italian). AC Monza Brianza 1912. 10 July 2014. Archived from the original on 14 July 2014. Retrieved 11 July 2014.
"Ufficiali le rescissioni di Zigoni, Anastasi e Viotti" (in Italian). A.C. Monza Brianza 1912. 8 January 2015. Archived from the original on 9 January 2015.
"Figc | News - Qualificazioni europee: Azzurrini a Roma, da sabato 24 in Svizzera". www.figc.it. Archived from the original on 4 March 2016.