6Joseph ST, Mi US. ASAE Standards: Standards, Engineering Practices and Data. Washington DC: American Society of Agricultural Engineers, 1992.
7Burkholder JA, Libra B, Weyer P, et al. Impacts of waste from concentrated animal feeding operations on water quality. Environmental Health Perspectives, 2007, 115 : 308-312.
8Thome PS. Environmental health impacts of concentrated animal feeding operations: Anticipating hazards- searching for solutions. Environmental Health Perspectives, 2007, 115:296-297.
9General Offices of China Agriculture Ministry(农业部办公厅).Scheme of Livestock and Poultry Pollution Source Census. Beijing: Ministry of Agriculture of the People' s Republic of China.
10Wang X-M(王新谋).Study of Livestock Manure.Shanghai: Shanghai Jiaotong University Press, 1999.