"Permaculture, Ecology and Agriculture: An investigation into Permaculture theory and practice using two case studies in northern New South Wales" Honours thesis, Human Ecology Program, Department of Geography, Australian National University 1993* Mollison, Bill & David Holmgren "Permaculture One".
"Permaculture, Ecology and Agriculture: An investigation into Permaculture theory and practice using two case studies in northern New South Wales" Honours thesis, Human Ecology Program, Department of Geography, Australian National University 1993* Macnamara, Looby.