Here are some useful books (listed by date of publication). For your convenience, you can click on the book cover to go to the ordering page on Amazon.
BOOKS ABOUT KETAMINE
Ketamine for depression: What psychologists need to know (2014)
by Raquel Bennett
OTHER USEFUL BOOKS
Navigating Psychedelics: Integration Workbook (2019)
by Psychedelics Today (Kyle Buller & Joe Moore)