G.M. · Graeme Merrall · Graham Marle
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| City Slickers - a tale of two african penguins... | 978-0-620-29214-6 (0-620-29214-8) | 2002 |
| City Slickers: a tale of two african penguins... | 978-0-620-33551-5 (0-620-33551-3) | 2002 |