References

• Quantum Physics by Gasiorowicz - somewhat terse book that covers a little more material than Griffiths, but at about the same level.
• Introductory Quantum Mechanics by Liboff - very thorough, but not particularly easy book to read at about the same level as Griffiths.

• The Feynman Lectures on Physics, Vol. III - as usual a good resource for a different view.

• Principles of Quantum Mechanics by Shankar - written at a little higher level than Griffiths, but not out of reach for undergraduates.