| Authors(s) | Judd, S. |
| Year | 1994a |
| Title | The Nymphal Taxonomy and Systematics of Western Palaearctic Lygaeid Bugs (Hemiptera, Heteroptera, Lygaeidae), with Special Reference to the British Fauna. Vol 1: 1-400. PhD Thesis Liverpool John Moores University |
| Authors(s) | Judd, S. |
| Year | 1994a |
| Title | The Nymphal Taxonomy and Systematics of Western Palaearctic Lygaeid Bugs (Hemiptera, Heteroptera, Lygaeidae), with Special Reference to the British Fauna. Vol 1: 1-400. PhD Thesis Liverpool John Moores University |