Rivet Your Readers With Deep Point of View
by Jill Elizabeth Nelson
This is a short and highly valuable reference book for anyone having issues with the POV in their stories, and, to be honest, for authors in general.
Ms. Nelson gives easy to understand guidance on deepening POV and includes a few worksheet pages for practice, and her multitude of examples point out the various aspects you want to watch for in your own writing.
You can find this great reference book at Amazon