| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Historic Overview of the Witwatersrand Goldfields: A Review of the Discovery, Geology, Geophysics, Development, Mining, Production and Future of the W | 978-0-620-32127-3 (0-620-32127-X) | 2004 |
| Historic Overview of the Witwatersrand Goldfields: A Review of the Discovery, Geology, Geophysics, Development, Mining, Production and Future of the W | 978-0-620-32125-9 (0-620-32125-3) |