| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| An economic analysis of southern African agriculture | 978-0-03-003744-3 (0-03-003744-1) | 1986 |
| Napoleon's Glance: The Secret of Strategy | 978-1-56025-457-7 (1-56025-457-2) | 2003 |
R.D. · W R. · William D. · William Duggan · William R.