Organisation for Economic Co-operation and Development. (2019). Reforming isssteson's public procurement for sustainability. OECD.
Chicago-čujuhus (17. p.)Organisation for Economic Co-operation and Development. Reforming Isssteson's Public Procurement for Sustainability. Paris, France: OECD, 2019.
MLA-čujuhus (9. p.)Organisation for Economic Co-operation and Development. Reforming Isssteson's Public Procurement for Sustainability. OECD, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.