"Kendall and Kylie Jenner's PacSun-designed T-shirts are removed from stores after retailer Island Company sues the sisters for using its trademarked logo" by Sarah Barns, www.dailymail.co.uk. January 6, 2016.
Lissa Rankin (2015). “The Anatomy of a Calling: A Doctor's Journey from the Head to the Heart and a Prescription for Finding Your Life's Purpose”, p.117, Rodale