| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Introductory System Engineering | Hardcover | 978-0-07-065317-7 | 1972 |
| The Age of Electronic Messages | Paperback | 978-0-07-065319-1 | 1990 |
| The Age of Electronic Messages | Hardcover | 978-0-262-20074-5 | 1990 |
| The Age of Electronic Messages | Paperback | 978-0-262-70102-0 | 1990 |
G. T. · J. G. · J. G. Truxal · J. T. · John G. · John Groff Truxal · John T · John Truxal