Piga, G., & Tátrai, T. (2015). Public procurement policy. Routledge.
芝加哥风格引文Piga, Gustavo, 与 Tünde Tátrai. Public Procurement Policy. Abingdon, Oxon ; New York, NY: Routledge, 2015.
MLA引文Piga, Gustavo, 与 Tünde Tátrai. Public Procurement Policy. Routledge, 2015.
警告：这些引文格式不一定是100％准确.