APA (7th ed.) Citation

El Omari, K., & Stammers, D. (2007). The design and development of drugs acting against the smallpox virus.

Chicago Style (17th ed.) Citation

El Omari, K., and D. Stammers. The Design and Development of Drugs Acting Against the Smallpox Virus. 2007.

MLA (9th ed.) Citation

El Omari, K., and D. Stammers. The Design and Development of Drugs Acting Against the Smallpox Virus. 2007.

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