APA (7th ed.) Citation

Ahmed & Chen. (1999). Persistent viral infections. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Ahmed and Chen. Persistent Viral Infections. New York: John Wiley & Sons, 1999.

MLA (8th ed.) Citation

Ahmed and Chen. Persistent Viral Infections. John Wiley & Sons, 1999.

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