| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Little Billy's Letters: An Incorrigible Inner Child's Correspondence with the Famous, Infamous, and Just Plain Bewildered | Paperback | 978-0-06-201510-5 (0-06-201510-9) | 2011 |
| Little Billy's Letters: An Incorrigible Inner Child's Correspondence with the Famous, Infamous, and Just Plain Bewildered | Hardcover | 978-0-06-180728-2 (0-06-180728-1) | 2010 |