Organisation for Economic Co-operation and Development. Environment Directorate & ProQuest (Firm). (2008). Environmental performance of agriculture in OECD countries since 1990. OECD.

Organisation for Economic Co-operation and Development. Environment Directorate and ProQuest (Firm). Environmental Performance of Agriculture in OECD Countries Since 1990. Paris: OECD, 2008.

Organisation for Economic Co-operation and Development. Environment Directorate and ProQuest (Firm). Environmental Performance of Agriculture in OECD Countries Since 1990. OECD, 2008.