Cheng, T. D., Song, X., Beresford, S. A. A., Ho, G. Y. F., Johnson, K. C., Datta, M., . . . Neuhouser, M. L. (2017). Serum 25-hydroxyvitamin D concentrations and lung cancer risk in never-smoking postmenopausal women. Cancer Causes Control.
استشهاد بنمط شيكاغوCheng, Ting-Yuan David, et al. "Serum 25-hydroxyvitamin D Concentrations and Lung Cancer Risk in Never-smoking Postmenopausal Women." Cancer Causes Control 2017.
MLA استشهادCheng, Ting-Yuan David, et al. "Serum 25-hydroxyvitamin D Concentrations and Lung Cancer Risk in Never-smoking Postmenopausal Women." Cancer Causes Control 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.