1) J. L. McHale, Molecular Spectroscopy, Pearson Education, 1999.
2) M. Hollas, Modern Spectroscopy, Wiley; 4th edition, 2004.
3) F. A. Cotton, Chemical Applications of Group Theory, 3rd edition, Wiley-Interscience, 1990.
4) D. C. Harris, M. D. Bertolucci, Symmetry and Spectroscopy, Dover, 1990.
5) C. M. Banwell, E. M. McCash, Fundamentals of Molecular Spectroscopy, Tata McGraw Hill, 1983
6) G. M. Barrow, Molecular Spectroscopy, McGraw Hill, 1962
7) J. I. Steinfeld, Molecules and Radiation: An Introduction to Modern Molecular Spectroscopy, 2nd edition, Dover, 2005.
8) J. D. Graybeal, Molecular Spectroscopy, McGraw Hill 1993.
9) D. A. McQuarrie and J. D. Simon, Physical Chemistry - a molecular approach, Viva Books Pvt. Ltd. 1998.