DOMÍNGUEZ-HERNÁNDEZ, Fernando, Lars BONELL and Alejandro MARTÍNEZ-GONZÁLEZ. A systematic literature review of factors that moderate bystanders’ actions in cyberbullying. Cyberpsychology: Journal of Psychosocial Research on Cyberspace. 2018, vol. 12, no. 4, p. Article 1. DOI: 10.5817/CP2018-4-1