„… models: A visual analytics perspective. Visual Informatics, 1(1), 48–56.https://doi.org/10.1016/j.visinf …” „… Politics? Daedalus, 109(1), 121–136. Re-trieved from: http://www.jstor.org/stable/20024652Wirtz, B. W …”

„… . Politics and trade changed it. During the 18th and 19th centuries, the British Empire grew and grew. People …” „… both audio and audio-visual listening material. Other Internet sources such as podcasts or YouTube …” „… speech and provide learners with additional visual cues such as facial expressions, gestures, graphs and …”