References
- Tong, L. K. J., in The Theory of the Photographic Process, 4th Ed., James, T. H. (Ed.), Macmillan, New York, 1977.
- Finley, K. T., and Tong, L. K. J., in The Chemistry of the Carbon-Nitrogen Double Bond, Patai, S. (Ed.), Interscience, New York, 1970.