| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| National Audubon Society Field Guide to North American Wildflowers | 978-0-394-50432-2 (0-394-50432-1) | 1979 | William A. Niering · Susan Rayfield · Carol Nehring |
| National Audubon Society Field Guide to North American Wildflowers: Eastern Region - Revised Edition | 978-0-375-40232-6 (0-375-40232-2) | 2001 | John W. Thieret · William A. Niering |