APA (7th ed.) Citation

(2009). Virus y sus Efectos: (Viruses and illness). Discovery Communications.

Chicago Style (17th ed.) Citation

Virus Y Sus Efectos: (Viruses and Illness). Discovery Communications, 2009.

MLA (9th ed.) Citation

Virus Y Sus Efectos: (Viruses and Illness). Discovery Communications, 2009.

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