Cita APA

Guerra, S., & Martinez, F. D. (2020). The Complex Beginnings of Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med.

Chicago Style Citation

Guerra, Stefano, i Fernando D. Martinez. "The Complex Beginnings of Chronic Obstructive Pulmonary Disease." Am J Respir Crit Care Med 2020.

Cita MLA

Guerra, Stefano, i Fernando D. Martinez. "The Complex Beginnings of Chronic Obstructive Pulmonary Disease." Am J Respir Crit Care Med 2020.