Antoñanzas, José Luís, Ester Ayllón Negrillo, Nieves Moyano, and Jacobo Cano. 2022. “School Factors Associated With Perpetrators and Victims of Direct and Indirect Bullying Among Adolescents”. Universitas Psychologica 21 (February). https://doi.org/10.11144/Javeriana.upsy21.sfap.