Niazmand, M. H., Hirai, T., Ito, S., Habibi, W. A., Noori, J., Hasheme, R., Yamaguchi, R., (2019). Journal of Wildlife Diseases 55(4), 804-811. Wildlife Disease Association, Lawrence, USA. English language
Himsworth, C. G., Hill, J. E., Huang, Y., Waters, E. H., Wobeser, G. A., (2009). Veterinary Pathology 46(2), 269-272. American College of Veterinary Pathologists Inc., Lawrence, USA. English language
Lee, S. H., Jong, M. H., Huang, T. S., Lin, Y. L., Wong, M. L., Liu, C. I., Chang, T. J., (2009). Transboundary and Emerging Diseases 56(5), 189-201. Blackwell Publishing, Berlin, Germany. English language
Steentjes, A., Veldman, K. T., Mevius, D. J., Landman, W. J. M., (2002). Avian Pathology 31(1), 31-39. Carfax Publishing, Taylor & Francis Ltd, Basingstoke, UK. English language
Huffel, X. van, Moor, A. de, (1987). Compendium on Continuing Education for the Practicing Veterinarian 9(10), F333-F339. English language
Chu, Y. P., (1983). Malaysian Forester 46(1), 117-132. English language
Gupta, R. C., Jain, D. K., (1980). Indian Forester 106(8), 565-568. English language
Chu, Y. P., (1978). Malaysian Forester 41(1), 53-73. English language
Flint, J. C., Jensen, R., (1951). American Journal of Veterinary Research 12, 5-13. English language
Chu, Y. P., Malaysian Forester 43(1), 88-116. English language