«codigopenal.pt». www.codigopenal.pt. Consultado em 25 de maio de 2018
erces.com
Bakaoukas, Michael. "The conceptualisation of 'Crime' in Classical Greek Antiquity: From the ancient Greek 'crime' (krima) as an intellectual error to the christian 'crime' (crimen) as a moral sin." ERCES ( European and International research group on crime, Social Philosophy and Ethics). 2005. [1]Arquivado em 28 de setembro de 2011, no Wayback Machine.
Bakaoukas, Michael. "The conceptualisation of 'Crime' in Classical Greek Antiquity: From the ancient Greek 'crime' (krima) as an intellectual error to the christian 'crime' (crimen) as a moral sin." ERCES ( European and International research group on crime, Social Philosophy and Ethics). 2005. [1]Arquivado em 28 de setembro de 2011, no Wayback Machine.