These are books related to Plan 9, its ideas, its design and its style. * [The Elements of Style | http://www.ablongman.com/professional/catalog/academic/product/1,4096,020530902X,00.html] William Strunk, Jr. E. B. White ([Online version of the first edition | http://orwell.ru/library/others/style/]) * [The Mythical Man-Month: Essays on Software Engineering | http://www.amazon.com/exec/obidos/tg/detail/-/0201835959/] by Frederick P. Brooks. * [Lions' Commentary on UNIX | http://www.lulu.com/content/99701] by John Lions. ([Ps and Pdf versions of the book | http://www.lemis.com/grog/Documentation/Lions/index.html]; prepared source code for v6 Unix: [Ps and Postscript | http://v6.cuzuco.com/] and [HTML | http://www.tom-yam.or.jp/2238/src/] versions) PROGRAMMING * [The Unix Programming Environment | http://cm.bell-labs.com/cm/cs/upe/index.html] by Brian W. Kernighan and Rob Pike. ISBN 0-13-937681-X (paperback), 0-13-937699-2 (hardback). * [The Practice of Programming | http://cm.bell-labs.com/cm/cs/tpop/index.html] by Brian W. Kernighan and Rob Pike. ISBN 0-201-61586-X. * [The C Programming Language | http://cm.bell-labs.com/cm/cs/cbook/] by Brian W. Kernighan and Dennis M. Ritchie. ISBN 0-13-110362-8 (second edition, paperback) * [The AWK Programming Language | http://cm.bell-labs.com/cm/cs/awkbook/] by Alfred V. Aho, Brian W. Kernighan and Peter J. Weinberger. ISBN 0-201-07981-X. * [Communicating Sequential Processes (CSP) | http://www.usingcsp.com/cspbook.pdf] by Tony Hoare - CSP is the concurrency model used in Inferno and thread(2) - For more information see [http://www.usingcsp.com] PLAN 9 * [Das Netzbetriebssystem Plan 9 | http://www.amazon.de/exec/obidos/ASIN/3446188819/] von Hans-Peter Bischof, Gunter Imeyer, Bernhard Kühl. (In German. Outdated, it only covers 2nd edition); Now available from [lulu | http://www.lulu.com/content/406379] INFERNO AND LIMBO * [Inferno Programming with Limbo | http://doc.cat-v.org/inferno/books/inferno_programming_with_limbo/] by Phillip Stanley-Marbell. ISBN: 0-470-84352-7 (Slightly outdated). * [Principles of Operating Systems: Design and Applications | http://www.amazon.com/gp/product/1418837695/] by Brian L Stuart. ISBN: 1-4188-3769-5 (general operating systems textbook with coverage of Inferno internals)