Hunma, Rannoo Rajahram (1973) Studies in isothiazole chemistry: I. isothiazolo [5,4-b] pyridines. II. approaches to isothiazolynes. PhD thesis, Thames Polytechnic.

Palmer, E. R. and Gibbs, J. A. (1973) Pulping characteristics of three trees of Pinus caribaea with different densities grown in Jamaica. Tropical Products Institute (TPI), London, UK. ISBN 0859540065