Cita APA

Johns, D. P., Walters, J. A., & Walters, E. H. (2014). Diagnosis and early detection of COPD using spirometry. J Thorac Dis.

Chicago Style Citation

Johns, David P., Julia A.E Walters, i E. Haydn Walters. "Diagnosis and Early Detection of COPD Using Spirometry." J Thorac Dis 2014.

Cita MLA

Johns, David P., Julia A.E Walters, i E. Haydn Walters. "Diagnosis and Early Detection of COPD Using Spirometry." J Thorac Dis 2014.