| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Mathematics Higher Level for the IB Diploma | 978-O-19-915226-1 (O-19-915226-8) | 2008 | Sandy Mackenzie |
B. Roberts · Bel Roberts · Bill Robertie · Bill Robertson · Billy Roberts · Bily Rafferty · Bly Robert · Dr. Bill Roberts · William Roberts