Connor, U., Ruiz-Garrido, M. F., Rozycki, W., Goering, E., Kinney, E. D. and Koehler, J. M. (2009) “Patient-directed medicine labeling: Text differences between the United States and Spain”, Communication and Medicine, 5(2), pp. 117–132. doi: 10.1558/cam.v5i2.117.