Eberhard, M. (2004). Virus Taxonomy: One Step Forward, Two Steps Back. Centers for Disease Control and Prevention.
Chicago Style aipamenaEberhard, Mark. Virus Taxonomy: One Step Forward, Two Steps Back. Centers for Disease Control and Prevention, 2004.
MLA aipamenaEberhard, Mark. Virus Taxonomy: One Step Forward, Two Steps Back. Centers for Disease Control and Prevention, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.