Dyfyniad APA

Pollard, A., Booy, R., Nadel, S., & Levin, M. (1996). Secondary cases of meningococcal disease.

Dyfyniad Arddull Chicago

Pollard, A., R. Booy, S. Nadel, and M. Levin. Secondary Cases of Meningococcal Disease. 1996.

Dyfyniad MLA

Pollard, A., et al. Secondary Cases of Meningococcal Disease. 1996.

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