| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Bits, Patterns & Reining | 978-1-883714-04-8 (1-883714-04-4) | 1990 |
| Training With Bits | 978-1-883714-05-5 (1-883714-05-2) | 1992 |
G J · G L. · G. Langdon · J. L. · W G · W.J. · W.L. · William G. · William G. Langdon · William J. · William, Jr. · William L.