Cita APA

Ryan, F. (1996). Virus X: Understanding the real threat of the new pandemic plagues. London: HarperCollins.

Citación estilo Chicago

Ryan, Frank. Virus X: Understanding the Real Threat of the New Pandemic Plagues. London: HarperCollins, 1996.

Cita MLA

Ryan, Frank. Virus X: Understanding the Real Threat of the New Pandemic Plagues. London: HarperCollins, 1996.

Precaución: Estas citas no son 100% exactas.