^Morris 1997, p. 7. sfn error: no target: CITEREFMorris1997 (help)
^Kumar، Pankaja Pradeep (2005). «Effective Use of Gantt Chart for Managing Large Scale Projects». Cost Engineering. 47 (7). Morgantown, WV: American Association of Cost Engineers: 13–21. ISSN0274-9696. OCLC209778284.