Bibliography and Index of the Sirenia and Desmostylia 
Ripple, Jeff
2 publications
| Ripple, Jeff; Perrine, Doug (detail) | |
| Manatees and dugongs of the world. — | |
| Ripple, Jeff (detail) | |
| 1999 | Manatees and dugongs of the world. Stillwater (Minnesota), Voyageur Press (WorldLife Discovery Guides): 1-144. Illus. —Photos by Doug Perrine; Foreword by Judith Vallee. |