M. Gené-Gil, M. Juan-Garau, and J. Salazar-Noguera, “A methodology for longitudinal research on EFL written production: Capturing writing multidimensionality by combining qualitative and quantitative procedures”, JRDS, vol. 3, no. 1, pp. 23–48, Dec. 2016, doi: 10.1558/jrds.30221.