↑Hoare, C.A.R. (December 1973). "Hints on Programming Language Design"(PDF). p. 27. Archived from the original(PDF) on 2009-09-15. Retrieved 2016-10-24. {{cite web}}: Unknown parameter |dead-url= ignored (|url-status= suggested) (help) (This statement is sometimes erroneously attributed to Edsger W. Dijkstra, also involved in implementing the first ALGOL 60 compiler.)
