Cita APA (7th ed.)
Piga, G., & Tátrai, T. (2015). Public procurement policy. Routledge.
Cita Chicago (17th ed.)
Piga, Gustavo, i Tünde Tátrai. Public Procurement Policy. Abingdon, Oxon ; New York, NY: Routledge, 2015.
Cita MLA (9th ed.)
Piga, Gustavo, i Tünde Tátrai. Public Procurement Policy. Routledge, 2015.
Atenció: Aquestes cites poden no estar 100% correctes.