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Dyfyniad Arddull ChicagoFiguerola, Jordi, Ramon Soriguer, Gema Rojo, Concepción Gómez Tejedor, and Miguel Angel Jimenez-Clavero. Seroconversion in Wild Birds and Local Circulation of West Nile Virus, Spain. Centers for Disease Control and Prevention, 2007.
Dyfyniad MLAFiguerola, Jordi, et al. Seroconversion in Wild Birds and Local Circulation of West Nile Virus, Spain. Centers for Disease Control and Prevention, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.