P. A. Guareschi, L. P. Romanzini, and L. B. Grassi, “ The ‘commodity’ information: a study on TV and radio commercials ”, Paidéia (Ribeirão Preto), vol. 18, no. 41, pp. 567–580, Dec. 2008, doi: 10.1590/S0103-863X2008000300012.