Cita APA

Calverley, P., Burge, P., Spencer, S., Anderson, J., & Jones, P. (2003). Bronchodilator reversibility testing in chronic obstructive pulmonary disease. BMJ Group.

Chicago Style Citation

Calverley, P., P. Burge, S. Spencer, J. Anderson, i P. Jones. Bronchodilator Reversibility Testing in Chronic Obstructive Pulmonary Disease. BMJ Group, 2003.

Cita MLA

Calverley, P., et al. Bronchodilator Reversibility Testing in Chronic Obstructive Pulmonary Disease. BMJ Group, 2003.