(1988). Chronic Obstructive Pulmonary Disease: Current Concepts.
Chicago Stili AlıntıChronic Obstructive Pulmonary Disease: Current Concepts. 1988.
MLA AlıntıChronic Obstructive Pulmonary Disease: Current Concepts. 1988.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..