(1997). The economic burden of illness.
Citação norma ChicagoThe Economic Burden of Illness. 1997.
MLA引文The Economic Burden of Illness. 1997.
警告：這些引文格式不一定是100％准確.
APA引文
(1997). The economic burden of illness.
Citação norma ChicagoThe Economic Burden of Illness. 1997.
MLA引文The Economic Burden of Illness. 1997.