Cengage Learning · Oxford University Press
| title | ISBN-13 | year of publication |
|---|---|---|
| Problems in Engineering Drawing Using Cadkey | 978-0-8273-5212-4 | 1995 |
| The Oxford Dictionary for Writers and Editors | 978-0-19-866239-6 | 2000 |
| The Oxford Guide to Style | 978-0-19-869175-4 | 2002 |
| The Oxford Style Manual | 978-0-19-860564-5 | 2003 |
R.R. · Robert C. Ritter · Robert J. Ritter · Robert M. Ritter · Robert R.