McKenzie, P. J., Githens, J. H., Harwood, M. E., Roberts, J. F., Rao, A. R., & Kempe, C. H. (1965). Haemorrhagic smallpox: 2. Specific bleeding and coagulation studies.

McKenzie, P. J., J. H. Githens, M. E. Harwood, J. F. Roberts, A. R. Rao, ja C. H. Kempe. Haemorrhagic Smallpox: 2. Specific Bleeding and Coagulation Studies. 1965.

McKenzie, P. J., et al. Haemorrhagic Smallpox: 2. Specific Bleeding and Coagulation Studies. 1965.