Goyanes, M. and Piñeiro-Naval, V. (2024): “Content Analysis in SPSS and KALPHA: Procedure for a Reliable Quantitative Analysis with Cohen’s Kappa and Krippendorff’s Alpha”, Estudios sobre el Mensaje Periodístico, 30(1), pp. 125–142. doi: https://doi.org/10.5209/esmp.92732.