Rujukan Lebihan kos

  1. ↑ Standish Group (2004). CHAOS Report (Laporan). West Yarmouth, Massachusetts: Standish Group.
  2. ↑ Flyvbjerg, Bent; Holm, Mette K. Skamris; Buhl, Søren L. (2002). "Underestimating Costs in Public Works Projects: Error or Lie?". Journal of the American Planning Association. 68: 279–295. arXiv:1303.6604. Bibcode:2013arXiv1303.6604F. doi:10.1080/01944360208976273. SSRN 2278415.