Pérez Curiel, C., Gutiérrez Rubio, D., Sánchez González, T., & Zurbano Berenguer, B. (2015). The use of journalistic sources on Politics, Economy and Culture sections in Spanish Journalism Proximity. Estudios Sobre El Mensaje Periodístico, 21, 101-117. https://doi.org/10.5209/rev_ESMP.2015.v21.50661