Weinshenker, B., & Ebers, G. (1987). The natural history of multiple sclerosis.
芝加哥风格引文Weinshenker, BG, 与 G. Ebers. The Natural History of Multiple Sclerosis. 1987.
MLA引文Weinshenker, BG, 与 G. Ebers. The Natural History of Multiple Sclerosis. 1987.
警告：这些引文格式不一定是100％准确.