APA (7th ed.) Citation

Pilsworth, R. (1990). The smallest enemy: Understanding and avoiding infection. Grey Seal.

Chicago Style (17th ed.) Citation

Pilsworth, Roy. The Smallest Enemy: Understanding and Avoiding Infection. London: Grey Seal, 1990.

MLA (9th ed.) Citation

Pilsworth, Roy. The Smallest Enemy: Understanding and Avoiding Infection. Grey Seal, 1990.

Warning: These citations may not always be 100% accurate.