1. ABS (Australian Bureau of Statistics), 1978. Year Book of Australia, 1977–1978 No. 62.
2. Australian Transport Advisory Council, 1974. Air Pollution and the Motor Vehicle in Australia - 1974 Review
3. Ayers, G.P. and Gras, J., 1979. In: Baseline 1977. Department of Science and the Environment, Canberra.
4. Baseline 1977. Baseline Air Monitoring Report. Department of Science, Canberra. Published 1979.
5. Blackmer, A.M. and Bremner, J.M., 1978. Inhibitory effect of nitrate on reduction of N20 to N2 by soil microorganisms. Soil Biol. Biochem, 10: 187–191.