Williams, F., Eschen, R., Harris, A., Djeddour, D., Pratt, C., Shaw, R. S., Varia, S., Lamontagne-Godwin, J., Thomas, S. E., Murphy, S. T., (2010). The economic cost of invasive non-native species on Great Britain, 199 pp. CABI, Wallingford, UK. English language
Williams, F., Eschen, R., Harris, A., Djeddour, D., Pratt, C., Shaw, R. S., Varia, S., Lamontagne-Godwin, J., Thomas, S. E., Murphy, S. T., (2010). The economic cost of invasive non-native species on Great Britain. Annexes 1 and 2 to the report, 33 pp. CABI, Wallingford, UK. English language