This page has some helpful cannabis-related resources for editors who are interested in contributing to the annual 420 Collaboration, or in general.

• Small, Ernest (November 2016). Cannabis: A Complete Guide. CRC Press. ISBN 978-1498761635. OCLC 971400059. and searchable form on Google Books
• Caulkins, Jonathan P. (July 2010), Estimated Cost of Production for Legalized Cannabis (PDF), RAND, Working paper WR-764-RC
• Jonathan P. Caulkins; Beau Kilmer; Mark A. R. Kleiman; Robert J MacCoun; Greg Midgette; Pat Oglesby; Rosalie Liccardo Pacula; Peter H. Reuter (2015), Considering Marijuana Legalization: Insights for Vermont and Other Jurisdictions (PDF), RAND Corporation, Research Report RR-864
• Clarke, Robert; Merlin, Mark (1 September 2013), Cannabis: Evolution and Ethnobotany, University of California Press, ISBN 978-0-520-95457-1, OCLC 927967115
• Dufton, Emily (2017), Grass Roots: The Rise and Fall and Rise of Marijuana in America, Basic Books, ISBN 0465096174 – author has PhD in American Studies; particularly good chapter on the origins of the Just Say No campaign
• Łukasz Kamieński (2016). Shooting Up: A Short History of Drugs and War. Oxford University Press. ISBN 978-0-19-026347-8.
• Russo, Ethan B.; Marcu, Jahan (2017). Kendall, David; Alexander, Stephen (eds.). Cannabinoid Pharmacology. Advances in Pharmacology. Vol. 80. Academic Press. pp. 69–134. doi:10.1016/bs.apha.2017.03.004. ISBN 0128112336.
• Schmader, David (2016). Weed: The User's Guide. Sasquatch Books. ISBN 978-1-63217-042-2. OCLC 940954318.

• Deutsche Welle cannabis articles
• Stern cannabis articles (in German)
• Süddeutsche Zeitung cannabis legalization articles (in German)
• Die Tageszeitung (taz) cannabis articles (in German)