M.-M. Stanojević, V. Kabalin Borenić, and V. Josipović Smojver, “Combining Different Types of Data in Studying Attitudes to English as a Lingua Franca”, RiL, vol. 10, no. 1, pp. 29–41, Mar. 2012, doi: 10.2478/v10015-011-0043-8.