^ abGuay DR (August 2010). "Tetrabenazine, a monoamine-depleting drug used in the treatment of hyperkinetic movement disorders". Am J Geriatr Pharmacother. 8 (4): 331–73. doi:10.1016/j.amjopharm.2010.08.006. PMID20869622.
^Callaghan CK, Rouine J, O'Mara SM (2018). "Potential roles for opioid receptors in motivation and major depressive disorder". Prog Brain Res. 239: 89–119. doi:10.1016/bs.pbr.2018.07.009. PMID30314570.