Citação norma APA

Yang, H., Xiang, P., Zhang, E., Guo, W., Shi, Y., Zhang, S., & Tong, Z. (2015). Is hypercapnia associated with poor prognosis in chronic obstructive pulmonary disease? A long-term follow-up cohort study. BMJ Open.

Citação norma Chicago

Yang, Hui, Pingchao Xiang, Erming Zhang, Weian Guo, Yanwei Shi, Shuo Zhang, and Zhaohui Tong. "Is Hypercapnia Associated With Poor Prognosis in Chronic Obstructive Pulmonary Disease? A Long-term Follow-up Cohort Study." BMJ Open 2015.

Citação norma MLA

Yang, Hui, et al. "Is Hypercapnia Associated With Poor Prognosis in Chronic Obstructive Pulmonary Disease? A Long-term Follow-up Cohort Study." BMJ Open 2015.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.