| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| El Planeta Tierra | 978-970-22-0613-2 (970-22-0613-8) | 2004 |
| Planeta Tierra - Cuanto Sabes de.. | 978-970-22-1114-3 (970-22-1114-X) | 2005 |
S R · S Reed · Sarah R. · Sarah Reed MA · Sarah Reed, Wendy Madgwick, Fergus Collins, Philip Brooks Robin Kerrod