^Evan E. Bolton; Yanli Wang; Paul A. Thiessen; Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry. 4: 217—241. doi:10.1016/S1574-1400(08)00012-1.
^Y. Gaoni and R. Mechoulam (1966). „Cannabichromene, a new active principle in hashish”. Chem. Commun. London: 20—21. doi:10.1039/C19660000020.