APA (7th ed.) Citation

Panno, J. (2011). Viruses. Facts On File, Inc..

Chicago Style (17th ed.) Citation

Panno, Joseph. Viruses. New York: Facts On File, Inc., 2011.

MLA (9th ed.) Citation

Panno, Joseph. Viruses. Facts On File, Inc., 2011.

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