Other ISBN range for Obsidian Press: Obsidian Press (978-0-9830311-...)
| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2008 | 978-0-9818082-0-8 | Mike Michalowicz | The Toilet Paper Entrepreneur: The tell-it-like-it-is guide to cleaning up in business, even if you are at the end of your roll. |
| 2014 | 978-0-9818082-9-1 | Mike Michalowicz | Profit First A Simple System to Transform Your Business from a Cash-Eating Monster to a Money-Making Machine |