Nicola Bonora · Nicole Böhmer · W.Nigel Bonner
| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Seals and Sea Lions of the World | Hardcover | 978-0-8160-5717-7 | 2004 | |
| Seals and Sea Lions of the World | " | 978-0-8160-2955-6 | 1994 | |
| Whales of the World | " | 978-0-8160-5216-5 | 2003 | W. Nigel Bonner |
| Whales of the World | Paperback | 978-0-7137-2369-4 | 1993 | |