1. ‘Make — A Program for Maintaining Computer Programs’, Bell Laboratories Computing Science Technical Report # 57 (1977).
2. and , UNIX Programmer's Manual, (Sixth Edition). Bell Telephone Laboratories, 1975.
3. ‘RPG Rapid Program Generator’, Stanford Artificial Intelligence Laboratory Operating Note 51.1 (1973).
4. and , The C Programming Language. Prentice-Hall, Englewood Cliffs, 1978.
5. ‘Yacc — Yet Another Compiler-Compiler’, Bell Laboratories Computing Science Technical Report # 32 (1975).