018 . Professor Humphrey's home page (页面存档备份,存于互联网档案馆) 尼古拉斯·汉弗莱在互联网电影资料库(IMDb)上的資料(英文) The human factor (页面存档备份,存于互联网档案馆) by Andrew Brown. 29 July 2006
Organic Chemistry. 1957, 22 (11): 1385–1394. doi:10.1021/jo01362a022. Humphrey, Andrew J.; O'Hagan, David. Tropane alkaloid biosynthesis. A century old problem