Engelen, Lucien. "2. Health 2.0 Update". Gesundheit 2.0: Das ePatienten-Handbuch, edited by Andréa Belliger and David J. Krieger, Bielefeld: transcript Verlag, 2014, pp. 67-96. https://doi.org/10.1515/transcript.9783839428078.67
Engelen, L. (2014). 2. Health 2.0 Update. In A. Belliger & D. Krieger (Ed.), Gesundheit 2.0: Das ePatienten-Handbuch (pp. 67-96). Bielefeld: transcript Verlag. https://doi.org/10.1515/transcript.9783839428078.67
Engelen, L. 2014. 2. Health 2.0 Update. In: Belliger, A. and Krieger, D. ed. Gesundheit 2.0: Das ePatienten-Handbuch. Bielefeld: transcript Verlag, pp. 67-96. https://doi.org/10.1515/transcript.9783839428078.67
Engelen, Lucien. "2. Health 2.0 Update" In Gesundheit 2.0: Das ePatienten-Handbuch edited by Andréa Belliger and David J. Krieger, 67-96. Bielefeld: transcript Verlag, 2014. https://doi.org/10.1515/transcript.9783839428078.67