J.B. · J. O'Brien · O'Brien
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Nei Jia Quan: Internal Martial Arts Teachers of Tai Ji Quan, Xing Yi Quan, and Ba Gua Zhang | 978-1-55643-506-5 (1-55643-506-1) | 2004 | Jess O'Brien |
| Nei Jia Quan, Second Edition: Internal Martial Arts | 978-1-58394-199-7 (1-58394-199-1) | 2007 | " |