| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Making Poultry Pay by the Philo System North, South, East and West: Written by the Originator of the Philo System, the Editorial Staff of the Poultry ... of Successful Users of the System | 978-1-112-35764-O (1-112-35764-5) | 2009 |