APA (7th ed.) Citation

Curtis, H. (1965). The Viruses. Natural History Press.

Chicago Style (17th ed.) Citation

Curtis, Helena. The Viruses. Garden City, N. Y: Natural History Press, 1965.

MLA (9th ed.) Citation

Curtis, Helena. The Viruses. Natural History Press, 1965.

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