@book{1991-stallman
,note={URL: {\tt http://grosskurth.ca/\allowbreak bib/\allowbreak entries.html\#\allowbreak 1991/\allowbreak stallman}. Note: Edition 0.28 beta, last updated 23 September 1991 for {\tt make} version 3.61 beta and see also newer version $0}
,title={{GNU Make: a program for directing compilation}}
,booktitle={{GNU Make: a program for directing compilation}}
,author={Richard Stallman and Roland McGrath}
,publisher={Free Software Foundation}
,address={Boston}
,year={1991}
}