Liu, K., Chen, Y., Lin, R., & Han, K. (2020). Clinical features of COVID-19 in elderly patients: A comparison with young and middle-aged patients. J Infect.
استشهاد بنمط شيكاغوLiu, Kai, Ying Chen, Ruzheng Lin, و Kunyuan Han. "Clinical Features of COVID-19 in Elderly Patients: A Comparison With Young and Middle-aged Patients." J Infect 2020.
MLA استشهادLiu, Kai, Ying Chen, Ruzheng Lin, و Kunyuan Han. "Clinical Features of COVID-19 in Elderly Patients: A Comparison With Young and Middle-aged Patients." J Infect 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.