^Brayfield, A (编). Clonidine. Martindale: The Complete Drug Reference. London, UK: Pharmaceutical Press. 13 January 2014 [28 June 2014]. (原始内容存档于2021-08-28).
^Neil, MJ. Clonidine: clinical pharmacology and therapeutic use in pain management.. Current Clinical Pharmacology. November 2011, 6 (4): 280–7. PMID 21827389. doi:10.2174/157488411798375886.