A & C Black Publishers Ltd · Princeton University Press
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Pipits and Wagtails. | 978-0-691-08834-1 (0-691-08834-9) | 2003 | Krister Mild |
| Pipits and Wagtails of Europe, Asia and North America: Identification and Systematics | 978-0-7136-5834-7 (0-7136-5834-7) | 2003 | Krister Mild · et al. |
| Species Limits & Systematics in Some Passerine Birds | 978-91-554-5341-1 (91-554-5341-4) | 2002 | |
P. A. · Pär Åhlström · Par Ahlstrom · Per Åhlström · Per Alstergren · Pierre Alusta