Standard and Poor's Corporation. Standard & Poor's MidCap 400 guide. McGraw-Hill.
芝加哥风格引文Standard and Poor's Corporation. Standard & Poor's MidCap 400 Guide. New York: McGraw-Hill.
MLA引文Standard and Poor's Corporation. Standard & Poor's MidCap 400 Guide. McGraw-Hill.
警告：这些引文格式不一定是100％准确.