− | Calnek, B.W. (2008) '''Avian Encephalomyelitis'''. In: ''Diseases of Poultry'', 12th Edition (eds. Saif, Y.M., Fadly A.M., Glissen J.R., McDougald L.R., Nolan L.K., Swayne D.E.) Wiley-Blackwell, pp 430-441
| + | {{CABI source |
| + | ) '''Avian Encephalomyelitis'''. In: ''Diseases of Poultry'', 12th Edition (eds. Saif, Y.M., Fadly A.M., Glissen J.R., McDougald L.R., Nolan L.K., Swayne D.E.) Wiley-Blackwell, pp 430-441 |
| Gough, R.E. and McNulty, M.S. (2007) '''Picornaviridae'''. In: ''Poultry Diseases'', 6th Edition (eds. Pattison, M., McMullin, P., Bradbury, J., Alexander, D.) Saunders, Elsevier, pp 350-359 | | Gough, R.E. and McNulty, M.S. (2007) '''Picornaviridae'''. In: ''Poultry Diseases'', 6th Edition (eds. Pattison, M., McMullin, P., Bradbury, J., Alexander, D.) Saunders, Elsevier, pp 350-359 |