Ding, B., Small, M., Bergström, G., & Holmgren, U. (2017). COPD symptom burden: Impact on health care resource utilization, and work and activity impairment. Int J Chron Obstruct Pulmon Dis.
استشهاد بنمط شيكاغوDing, Bo, Mark Small, Gina Bergström, و Ulf Holmgren. "COPD Symptom Burden: Impact On Health Care Resource Utilization, and Work and Activity Impairment." Int J Chron Obstruct Pulmon Dis 2017.
MLA استشهادDing, Bo, Mark Small, Gina Bergström, و Ulf Holmgren. "COPD Symptom Burden: Impact On Health Care Resource Utilization, and Work and Activity Impairment." Int J Chron Obstruct Pulmon Dis 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.