1. Bianchi, T., & Guidi, V. (2010). The Comparative Survey on the National Public Procurement Systems across the PPN. Authority for the Supervision of Public Contracts, Department for the Co-ordination of European Union Policies, PPN Presidency.
2. Bovis, C. (2005). Public Procurement in the European Union. Houndmills, Basingstoke, Hampshire: Palgrave Macmıllan.
3. Caldwell, N., Walker, H., Harland, C., Knight, L., Zheng, J., & Wakeley, T. (2005). Promoting Competitive Markets: The Role of Public Procurement. Journal of Purchasing and Supply Management, 11(5–6), 242-251.
4. Çetinkaya, Ö (2014). “Kamu İhale Kanunu ve Yolsuzluk Riskleri”. Bursa: Ekin Yayınevi.
5. Doğanyiğit, S. (2010). İhalenin Ruhu. Yaklaşık Maliyetin Gizliliği. Dış Denetim Dergisi, Ekim-Aralık 98–99.