Witteveen, L., and R. Lie. “Learning about “wicked” Problems in the Global South. Creating a Film-Based Learning Environment With ‘Visual Problem Appraisal’”. MedieKultur: Journal of Media and Communication Research, vol. 28, no. 52, Mar. 2012, p. 18 p., doi:10.7146/mediekultur.v28i52.5482.