[1] “Can PTSD Be Linked to Violence?” February 26, 2015

[2] “Work Policies May Be Kinder, But Brutal Competition Isn’t,” August 18, 2015

[3] “Inside Amazon: Wrestling Big Ideas in a Bruising Workplace,” Jodi Kantor and David Streitfeld, August 15, 2015

[4] www.ethicalsystems.org/content/featured-collaborator-november-david-hirshleifer

[5] “How a Toxic Workplace Could Literally Destroy Your Health,” August 25, 2015