Bransden, B.H. and Joachain, C.J. (2000) Quantum mechanics. 2nd ed. Harlow: Prentice Hall.
Gasiorowicz, S. (2003) Quantum Physics. 3rd Revised edition. New York: John Wiley and Sons Ltd.
Griffiths, D.J. (2003) Introduction to Quantum Mechanics. 2nd edition. Pearson Education (US).