Oxford University Press · Whitaker Publishing
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Hemp for Victory: History and Qualities of the World's Most Useful Plant | 978-0-9549939-0-0 (0-9549939-0-X) | 2005 | Kenyon Gibson · Cindy MacKintosh |
| IQ and Human Intelligence | 978-0-19-958559-5 (0-19-958559-8) | 2011 | |