1. Antill J. M. (1982). Critical path methods in construction practical 3rd Ed. John Wiley and Sons New York N.Y.
2. Fondahl J. W. (1961). “A non-computer approach to the critical path method for the construction industry.” Tech. Rep. No. 9 The Construction Inst. Dept. of Civ. Engrg. Stanford Univ. Stanford Calif.
3. Harris R. B. (1978). Precedence and arrow networking techniques for construction . John Wiley and Sons New York N.Y.
4. Critical-Path Planning and Scheduling: Mathematical Basis
5. Meyer W. L. and Shaffer L. R. (1963). “Extensions of the critical path method through the application of integer programming.” Civ. Engrg. Constr. Res. Series No. 2 University of Illinois Urbana-Champaign Ill.