1. Adams, Jeff. 2008. Documentary Graphic Novels and Social Realism. Bern: Peter Lang.
2. Ahmed, Sara. 2000. The Promise of Happiness. Durham: Duke University Press.
3. Baetens, Jan, and Hugo Frey. 2014. The Graphic Novel: An Introduction. Cambridge: Cambridge University Press.
4. Bartky, Sandra Lee. 1990. “Feeding Egos and Tending Wounds: Deference and Disaffection in Women’s Emotional Labor.” In Femininity and Domination: Studies in Phenomenology of Oppression, 99–119. New York: Routledge.
5. Beronä, David A. 2011. “Wordless Comics: The Imaginative Appeal of Peter Kuper’s The System.” In Critical Approaches to Comics: Theories and Methods, edited by Matthew J. Smith and Randy Duncan, 17–26. New York: Routledge.