图片来自 wikipedia
- 莱昂氏 UNIX 源代码分析/（澳）莱昂氏（Lions，J.）著；尤晋元译. — 北京：机械工业出版社，2000.7
- Unix v6
- Unix 内核源码剖析/（日）青柳隆宏著；殷中翔译. — 北京：人民邮电出版社，2014.3
- Unix v6
- UPM v7, 1979
- http://web.cuzuco.com/~cuzuco/v7/
- Volume 1 has the Manual pages, sections 1 to 8.
- Volume 2A has papers on General Works, Getting Started, Document, Preparation, and Programming.
- Volume 2B has papers on Supporting Tools and Languages, Implementation, Maintenance, and Miscellaneous
- UNIX 操作系统设计/（美）贝奇（Bach.M.J）著；陈葆珏等译. — 北京：机械工业出版社，2000.4
- Unix System V Release 2
- 还没看，先不推荐