M J · M. Jankowski · Mark A. Jankowski · Mark J.
| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | 
|---|---|---|---|---|
| The Power of Nice: How to Negotiate So Everyone Wins--Especially You! | Audio Cassette | 978-0-9675965-0-1 (0-9675965-0-5) | 1999 | Ron Shapiro | 
| The Power of Nice: How to Negotiate So Everyone Wins--Especially You! | VHS Tape | 978-0-9675965-1-8 (0-9675965-1-3) | 1999 | " |