"Zwaricz tomó parte en adiós de Campos" [Zwaricz returns to participate in goodbye to Campos] (in Spanish). El Siglo de Durango. 11 May 2004. Archived from the original on 3 March 2016. Retrieved 31 July 2012.
espn.com
espndeportes.espn.com
"Un refuerzo inesperado" [An unexpected reinforcement] (in Spanish). ESPN Deportes. 20 June 2008.
"Zwaricz tomó parte en adiós de Campos" [Zwaricz returns to participate in goodbye to Campos] (in Spanish). El Siglo de Durango. 11 May 2004. Archived from the original on 3 March 2016. Retrieved 31 July 2012.