Cita APA (7a ed.)

Crawford, D. H. (2007). Deadly companions: How microbes shaped our history. Oxford University Press.

Cita Chicago Style (17a ed.)

Crawford, Dorothy H. Deadly Companions: How Microbes Shaped Our History. Oxford ; New York: Oxford University Press, 2007.

Cita MLA (9a ed.)

Crawford, Dorothy H. Deadly Companions: How Microbes Shaped Our History. Oxford University Press, 2007.