Pelat, C., Turbelin, C., Bar-Hen, A., Flahault, A., & Valleron, A. (2009). More Diseases Tracked by Using Google Trends. Centers for Disease Control and Prevention.

Pelat, Camille, Clément Turbelin, Avner Bar-Hen, Antoine Flahault, ja Alain-Jacques Valleron. More Diseases Tracked By Using Google Trends. Centers for Disease Control and Prevention, 2009.

Pelat, Camille, et al. More Diseases Tracked By Using Google Trends. Centers for Disease Control and Prevention, 2009.