APA (7th ed.) Citation

Crawford, D. H. (2000). The invisible enemy: A natural history of viruses. Oxford University Press.

Chicago Style (17th ed.) Citation

Crawford, Dorothy H. The Invisible Enemy: A Natural History of Viruses. Oxford: Oxford University Press, 2000.

MLA (9th ed.) Citation

Crawford, Dorothy H. The Invisible Enemy: A Natural History of Viruses. Oxford University Press, 2000.