1. P.T. Anastas, J.C. Warner, Green Chemistry: Theory and Practice (Oxford University Press, UK, 1998)
2. P.T. Anastas, T. Williamson, Green Chemistry, Frontiers in Benign Chemical Synthesis and Process (Oxford University Press, Oxford, 1998)
3. L.D. Quin, J.A. Tyrell, Fundemental of Heterocyclic Chemistry (Wiley, Hoboken, 2010)
4. J.A. Joule, K. Mills, Heterocyclic chemistry, 2nd edn. (Blackwell Scince, Oxford, 2000)
5. M. Sainsbury, Heterocyclic Chemistry (Royal Society of Chemistry, London, 2001)