Shah, S. A., Sander, S., White, C. M., Rinaldi, M., & Coleman, C. I. (2007). Evaluation of echinacea for the prevention and treatment of the common cold: A meta-analysis. Lancet Infect Dis.
Citação norma ChicagoShah, Sachin A., Stephen Sander, C Michael White, Mike Rinaldi, and Craig I. Coleman. "Evaluation of Echinacea for the Prevention and Treatment of the Common Cold: A Meta-analysis." Lancet Infect Dis 2007.
Citação norma MLAShah, Sachin A., et al. "Evaluation of Echinacea for the Prevention and Treatment of the Common Cold: A Meta-analysis." Lancet Infect Dis 2007.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.