Interview with Brian Kernighan | Linux Journal. [dostęp 2021-12-03]. Cytat: Multics was an acronym for something like Multiplexed Information and Computing Service, and it was big and complicated because it had many of everything. I suggested Unics for Ken’s new system, because it was small and had at most one of anything. (ang.).
D. E. Bodenstab, T. F. Houghton, K. A. Kelleman, G. Ronkin i inni. UNIX Operating System Porting Experiences. „AT&T Bell Laboratories Technical Journal”. 63 (8), s. 9, październik 1984. [dostęp 2011-01-28].