^LD Reynolds and NG Wilson, “Scribes and Scholars” 3rd Ed. Oxford: 1991. pp193–4.
^S. M. Fiuza. Phenolic acid derivatives with potential anticancer properties––a structure–activity relationship study. Part 1: Methyl, propyl and octyl esters of caffeic and gallic acids. Elsevier. doi:10.1016/j.bmc.2004.04.026.缺少或|url=为空 (帮助)
^Tsao, Makepeasce. A New Synthesis Of Mescaline. Journal of the American Chemical Society. July 1951, 73 (11): 5495–5496. ISSN 0002-7863. doi:10.1021/ja01155a562.