Zorgani, A. A., Stewart, J., Blackwell, C. C., Elton, R. A., & Weir, D. M. (1992). Secretor status and humoral immune responses to Neisseria lactamica and Neisseria meningitidis. Cambridge University Press.

Zorgani, A. A., J. Stewart, C. C. Blackwell, R. A. Elton, ja D. M. Weir. Secretor Status and Humoral Immune Responses to Neisseria Lactamica and Neisseria Meningitidis. Cambridge University Press, 1992.

Zorgani, A. A., et al. Secretor Status and Humoral Immune Responses to Neisseria Lactamica and Neisseria Meningitidis. Cambridge University Press, 1992.