APA (7th ed.) Citation

Butler, C., Kelly, M., Hood, K., Schaberg, T., Melbye, H., Serra-Prat, M., . . . Coenen, S. (2011). Antibiotic prescribing for discoloured sputum in acute cough/lower respiratory tract infection.

Chicago Style (17th ed.) Citation

Butler, C., et al. Antibiotic Prescribing for Discoloured Sputum in Acute Cough/lower Respiratory Tract Infection. 2011.

MLA (9th ed.) Citation

Butler, C., et al. Antibiotic Prescribing for Discoloured Sputum in Acute Cough/lower Respiratory Tract Infection. 2011.

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