Cita APA

Perdue, M. L., & Nguyen, T. (2012). The WHO research agenda for influenza: Two years later. World Health Organization.

Citación estilo Chicago

Perdue, Michael L., y Tim Nguyen. The WHO Research Agenda for Influenza: Two Years Later. World Health Organization, 2012.

Cita MLA

Perdue, Michael L., y Tim Nguyen. The WHO Research Agenda for Influenza: Two Years Later. World Health Organization, 2012.