Billy Valentine · William Valentine
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| A Season of Grief | 978-1-138-43083-9 (1-138-43083-8) | 2017 |
| Gang Intelligence Manual: Identifying And Understanding Modern-Day Violent Gangs In The United States | 978-0-87364-844-8 (0-87364-844-7) | 1995 |
| Gangs and Their Tattoos: Identifying Gangbangers on the Street & in Prison | 978-1-58160-099-5 (1-58160-099-2) | 2000 |