1. Standard Methods for the Examination of Water and Waste Water;APHA,1980
2. Methods of Soil Analysis, Part 2—Chemical and Microbiological Properties;ASA-SSSA,1982
3. Methods of Soil Analysis, Part 1—Physical and Mineralogical Methods;ASA-SSSA,1986
4. Phosphorus dynamics in ponds;Boyd,1971
5. Water Quality in Ponds for Aquaculture;Boyd,1990