I have made every attempt to credit my sources. Here is a list of sources I used in addition to the links provided on this site:

Anxiety & Depression by Margaret Wehrenberg, 2014

An Introduction to Cognitive Behaviour Therapy, 3rd ed, by Kennerley, Kirk, and Westbrook, 2017

Diagnostic and Statistical Manual of Mental Disorders(DSM–5) by The American Psychiatric Association, 2013

The Mindfulness Toolbox: 50 Practical Tips, Tools, and Handouts for Anxiety, Depression, Stress, and Pain, by Donald Altman, M.A., LPC