s. a. · Senate Affairs · The Sound Approach
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Birding from the Hip: A Sound Approach Anthology | 978-90-810933-3-0 (90-810933-3-9) | 2009 | Anthony McGeehan |
| The Sound Approach to Birding: A Guide to Understanding Bird Sound | 978-90-810933-1-6 (90-810933-1-2) | 2006 | Mark Constantine |