| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Barron's TOEFL iBT Superpack | 978-1-4380-9305-5 (1-4380-9305-5) | 2010 | Ph.D., Pamela Sharpe · Stephen J. Matthiesen |
| Essential Words for the TOEFL | 978-0-7641-3640-5 (0-7641-3640-2) | 2007 | Steven J. Matthiessen |
C.S. · Charles A., Jr. Stansfield · Charles A. Stansfield · Charles A. Stansfield Jr. · Charles S. · Charles W. Stansfield · Professor Charles A. Stansfield