1. Cavadino, Michael, James, Dignan, George Mair and Jamie Bennett. The penal system: an introduction (6th ed.). Sage Publications, 2019.
2. Coomber, Ross. “Chapter 1. Social Fear, Drug-Related Beliefs and Drug Policy”: 15–31. In: Geoffrey Hunt, Maitena Milhet and Henry Bergeron, eds. Drugs and Culture: Knowledge, Consumption and Policy. Farnham: Ashgate, 2011.
3. Coomber, Ross, and Leah Moyle. “Beyond drug dealing: Developing and extending the concept of ‘social supply’ of illicit drugs to ‘minimally commercial supply’.” Drugs, Education, Prevention and Policy, Vol. 21, Issue 2, (2014): 157–164 // doi:https://doi.org/10.3109/09687637.2013.798265
4. Coomber, Ross, Leah Moyle, and Nigel South. “The normalisation of drug supply: The social supply of drugs as the ‘other side’ of the history of normalisation.” Drugs: Education, Prevention and Policy, Vol. 23, Issue 3, (2016): 255–263 // doi:https://doi.org/10.3109/09687637.2015.1110565
5. Deutsche Welle. “Germany approves partial legalization of cannabis from April.” (22.03.2024) // https://www.dw.com/en/germany-approves-partial-legalization-of-cannabis-from-april/a-68641043