1. Andersson, M., and L. Soold. 2020. Så blir postombuden ofrivilliga knarklangare [How the postmen become involuntary drug dealers]. Accessed December 29, 2020. https://handelsnytt.se/2020/06/25/sa-blir-postombuden-ofrivilliga-knarklangare/.
2. Appadurai, A. 1996. Modernity at large: Cultural dimensions of globalization. Minneapolis: University of Minnesota Press.
3. Drug use Among Schoolchildren in Rural Scotland