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A Associação Brasileira de Normas Técnicas (ABNT) atualizou a NBR 10520 em julho de 2023, estabelecendo que a expressão latina "et al." deve ser grafada em itálico em citações de obras com mais de três autores. Anteriormente, a NBR 6023:2018 já havia introduzido essa recomendação para referências bibliográficas. Portanto, desde a atualização de 2023, o uso de "et al." em itálico é uma exigência tanto nas citações quanto nas referências, conforme as normas da ABNT.