1. A Monitoring and Classification System for New Zealand Lakes and Reservoirs
2. Burns , N. M. , Bryers , G. and Bowman , E. 2000 .Protocols for monitoring trophic levels of New Zealand lakes and reservoirs138 Wellington , NZ : Published by NZ Ministry for the Environment . (http://www.mfe.govt.nz/publications/water/monitoring-trophic-status-of-nz-lakes01.html)
3. Burns , N. M. 1999 .Lake Rotorua and its Inputs in the 1990s, Lakes Consulting Report 99/3, Lakes Consulting, 42 Seabreeze Rd. 53 New Zealand : Devonport .
4. Report to the Ministry for the Environment. NIWA Client Report: MFE80216;Burns N. M.,1998
5. Burns , N. M. and Bowman , E. 2000 .Manual on Monitoring Trophic Levels of Lakes and Reservoirs135 Auckland , New Zealand : Lakes Consulting .