Garrod John W & Gorrod, J. W. (1978). Biological oxidation of nitrogen: Proceedings of the 2nd International Symposium on the Biological Oxidation of Nitrogen in Organic Molecules held at the Chelsea College, University of London, United Kingdom, 19-23 September, 1977. Elsevier/North-Holland Biomedical Press ; sole distributors for the USA and Canada, Elsevier North-Holland.

Garrod John W and J. W. Gorrod. Biological Oxidation of Nitrogen: Proceedings of the 2nd International Symposium on the Biological Oxidation of Nitrogen in Organic Molecules Held at the Chelsea College, University of London, United Kingdom, 19-23 September, 1977. Amsterdam ; New York : New York: Elsevier/North-Holland Biomedical Press ; sole distributors for the USA and Canada, Elsevier North-Holland, 1978.

Garrod John W and J. W. Gorrod. Biological Oxidation of Nitrogen: Proceedings of the 2nd International Symposium on the Biological Oxidation of Nitrogen in Organic Molecules Held at the Chelsea College, University of London, United Kingdom, 19-23 September, 1977. Elsevier/North-Holland Biomedical Press ; sole distributors for the USA and Canada, Elsevier North-Holland, 1978.