F, H. H. A. N. H. Y. H. (2014). Does the duration of smoking cessation have an impact on hospital admission and health-related quality of life amongst COPD patients? International Journal of COPD, 9, . https://doi.org/10.2147/COPD.S56637
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)F, Hassan H.A.; Aziz N.A.; Hassan Y.; Hassan. "Does the Duration of Smoking Cessation Have an Impact on Hospital Admission and Health-related Quality of Life Amongst COPD Patients?" International Journal of COPD 9 (2014). https://doi.org/10.2147/COPD.S56637.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)F, Hassan H.A.; Aziz N.A.; Hassan Y.; Hassan. "Does the Duration of Smoking Cessation Have an Impact on Hospital Admission and Health-related Quality of Life Amongst COPD Patients?" International Journal of COPD, vol. 9, 2014, https://doi.org/10.2147/COPD.S56637.