Cita APA (7a ed.)

Oppong, R., Coast, J., Hood, K., Nuttall, J., Smith, R., & Butler, C. (2011). Resource use and costs of treating acute cough/lower respiratory tract infections in 13 European countries: Results and challenges.

Cita Chicago Style (17a ed.)

Oppong, R., J. Coast, K. Hood, J. Nuttall, R. Smith, y C. Butler. Resource Use and Costs of Treating Acute Cough/lower Respiratory Tract Infections in 13 European Countries: Results and Challenges. 2011.

Cita MLA (9a ed.)

Oppong, R., et al. Resource Use and Costs of Treating Acute Cough/lower Respiratory Tract Infections in 13 European Countries: Results and Challenges. 2011.