Organisation for Economic Co-operation and Development, Global Forum on Taxation, & ProQuest (Firm). (2007). Tax co-operation: Towards a level playing field :2007 assessment. OECD.

Organisation for Economic Co-operation and Development, Global Forum on Taxation, and ProQuest (Firm). Tax Co-operation: Towards a Level Playing Field :2007 Assessment. Paris, France: OECD, 2007.

Organisation for Economic Co-operation and Development, et al. Tax Co-operation: Towards a Level Playing Field :2007 Assessment. OECD, 2007.