Clark, A., Potter, C. W., Jennings, R., Nicholl, J. P., Langrick, A. F., Schild, G. C., . . . Tyrrell, D. A. (1983). A comparison of live and inactivated influenza A (H1N1) virus vaccines. 2. Long-term immunity. Cambridge University Press.

Clark, A., C. W. Potter, R. Jennings, J. P. Nicholl, A. F. Langrick, G. C. Schild, J. M. Wood, و D. A. Tyrrell. A Comparison of Live and Inactivated Influenza A (H1N1) Virus Vaccines. 2. Long-term Immunity. Cambridge University Press, 1983.

Clark, A., et al. A Comparison of Live and Inactivated Influenza A (H1N1) Virus Vaccines. 2. Long-term Immunity. Cambridge University Press, 1983.