Hunsperger, E. A., McElroy, K. L., Bessoff, K., Colón, C., Barrera, R., & Muñoz-Jordán, J. L. (2009). West Nile Virus from Blood Donors, Vertebrates, and Mosquitoes, Puerto Rico, 2007. Centers for Disease Control and Prevention.
Chicago-tyylinen lähdeviittausHunsperger, Elizabeth A., Kate L. McElroy, Kovi Bessoff, Candimar Colón, Roberto Barrera, ja Jorge L. Muñoz-Jordán. West Nile Virus From Blood Donors, Vertebrates, and Mosquitoes, Puerto Rico, 2007. Centers for Disease Control and Prevention, 2009.
MLA-viiteHunsperger, Elizabeth A., et al. West Nile Virus From Blood Donors, Vertebrates, and Mosquitoes, Puerto Rico, 2007. Centers for Disease Control and Prevention, 2009.
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