| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Birds in Flight | 978-1-112-00340-0 (1-112-00340-1) | 2009 |
| The Infancy of Animals | 978-1-112-56392-8 (1-112-56392-X) | 2009 |
| The infancy of animals | 978-1-4297-7279-2 (1-4297-7279-4) | 2009 |
P.P. · P W. · W.P. · W.W. · William P.