APA (7th ed.) Citation

Parnell, H., Quirke, G., Farmer, S., Adeyemo, S., & Varney, V. (2015). Authors' reply. International journal of chronic obstructive pulmonary disease, 713.

Chicago Style (17th ed.) Citation

Parnell, Helen, Ginny Quirke, Sally Farmer, Sumbo Adeyemo, and Veronica Varney. "Authors' Reply." International Journal of Chronic Obstructive Pulmonary Disease 2015: 713.

MLA (9th ed.) Citation

Parnell, Helen, et al. "Authors' Reply." International Journal of Chronic Obstructive Pulmonary Disease, 2015, p. 713.