Healy, B. C., Ali, E., Guttmann, C. R., Chitnis, T., Glanz, B. I., Buckle, G., . . . Ascherio, A. (2009). Smoking and Disease Progression in Multiple Sclerosis.
Citação norma ChicagoHealy, Brian C., et al. Smoking and Disease Progression in Multiple Sclerosis. 2009.
MLA引文Healy, Brian C., et al. Smoking and Disease Progression in Multiple Sclerosis. 2009.
警告：這些引文格式不一定是100％准確.