APA   Click to copy
Xie, Q. Social Isolation and Mortality in Chronic Obstructive Pulmonary Disease (COPD). Manuscript in Press.

Chicago/Turabian   Click to copy
Xie, Qiang. “Social Isolation and Mortality in Chronic Obstructive Pulmonary Disease (COPD).” Manuscript in press (n.d.).

MLA   Click to copy
Xie, Qiang. “Social Isolation and Mortality in Chronic Obstructive Pulmonary Disease (COPD).” Manuscript in Press.

@article{qiang-a,
  title = {Social Isolation and Mortality in Chronic Obstructive Pulmonary Disease (COPD)},
  journal = {Manuscript in press},
  author = {Xie, Qiang}
}