| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Results of Astronomical Observations Made at the Royal Observatory, Cape of Good Hope During the Years ... | 978-1-144-96932-3 (1-144-96932-8) | 2010 |
| Results of Meridian Observations Made at the Royal Observatory, Cape of Good Hope, During the Years ... | 978-1-146-41535-4 (1-146-41535-4) | 2010 |