Townsend, P. D., & Kelly, J. C. (1973). Colour centres and imperfections in insulators and semiconductors / (by) P.D. Townsend, J.C. Kelly. Chatto and Windus for Sussex University Press.
Chicago Style (17th ed.) CitationTownsend, Peter David, and John Clive Kelly. Colour Centres and Imperfections in Insulators and Semiconductors / (by) P.D. Townsend, J.C. Kelly. London: Chatto and Windus for Sussex University Press, 1973.
MLA (9th ed.) CitationTownsend, Peter David, and John Clive Kelly. Colour Centres and Imperfections in Insulators and Semiconductors / (by) P.D. Townsend, J.C. Kelly. Chatto and Windus for Sussex University Press, 1973.
Warning: These citations may not always be 100% accurate.