References
- Irwin , R. W. 1966 . “Sources of Farm Water Supply” . In Ontario Department of Agriculture, Farm Economics Branch
- Irwin , R. W. 1971 . “Cistern for Domestic Water Use”. . Canadian Agricultural Engineering. , 19 : 12 – 14 .
- Joint Committee on Rural Sanitation . 1962 . “Manual of Individual Water Supply Systems” . In U.S. Department of Health, P.H. 524