Cita APA

Chang, A., Phelan, P., Carlin, J., Sawyer, S., & Robertson, C. (1998). A randomised, placebo controlled trial of inhaled salbutamol and beclomethasone for recurrent cough. BMJ Group.

Chicago Style Citation

Chang, A., P. Phelan, J. Carlin, S. Sawyer, i C. Robertson. A Randomised, Placebo Controlled Trial of Inhaled Salbutamol And beclomethasone for Recurrent Cough. BMJ Group, 1998.

Cita MLA

Chang, A., et al. A Randomised, Placebo Controlled Trial of Inhaled Salbutamol And beclomethasone for Recurrent Cough. BMJ Group, 1998.