1. Putrajaya and Putrajaya lake development;Ariffin,1998
2. Batten, LA. Habitat management for bird species in urban wetlands. Welsh Harp Conservation Group Report No 2: pp. 22–27. Welsh Harp Conservation Group, 1989.
3. How ‘green’ are constructed wetland treatment systems?;Brix,1998
4. Aquaculture, ecological engineering: lessons from China;Chan;Ambio,1993
5. Reed beds and constructed wetlands for wastewater treatment;Cooper,1996