Pollard, A., Booy, R., Nadel, S., & Levin, M. (1996). Secondary cases of meningococcal disease.
Cita Chicago (17th ed.)Pollard, A., R. Booy, S. Nadel, i M. Levin. Secondary Cases of Meningococcal Disease. 1996.
Cita MLA (9th ed.)Pollard, A., et al. Secondary Cases of Meningococcal Disease. 1996.
Atenció: Aquestes cites poden no estar 100% correctes.