APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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