| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1992 | 978-0-9519098-0-5 | Jim Hayward | Manual of Colour Breeding: Parakeets, Lovebirds, Cockatiels and Other Parrots Including Universal Breeding Programmes |
| 1995 | 978-0-9519098-1-2 | '' | Rosellas, The: The Species, Sub-Species and Colour Varieties of the Genera Platycercus, Barnardius and Purpureicephalus |
| 1997 | 978-0-9519098-2-9 | '' | African Poicephaus Parrots |
| '' | 978-0-9519098-3-6 | '' | Manual of Colour Breeding: Indian Ring-neck Supplement |
| 1998 | 978-0-9519098-4-3 | '' | Manual of Colour Breeding: Lineolated Parrakeet Supplement |