Norbury, James
Big Panda and Tiny Dragon
Mandala, San Rafael, 2021
 Buku Teks
Sincero, Jen
You are a Badass : How to Stop Doubting Your Greatness and Start Living an Awesome Life
Running Press, 2017
 Buku Teks SO
Wiest, Brianna
The mountain is you : transforming self-sabotage into self-mastery
Thought Catalog Books, 2020
 Buku Teks
Smith, Jim
From average to awesome: lessons for living an extraordinary life
American Society for Training & Development, 2008
 eBooks
Holiday, Ryan
The Obstacle Is the Way: The Timeless Art of Turning Trials into Triumph
Penguin, 2014
 Buku Teks SO