J. T. · Jörn Töpper · Jorma Toppari
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Being a Starving Artist Sucks | 978-0-9816220-0-2 (0-9816220-0-3) | 2008 |
| Verbal Kung Fu for Freelancers: Master the Art of Self Defense against Difficult Clients | 978-0-9816220-4-0 (0-9816220-4-6) | 2009 |