Youngman, I. (1998). Competitor Analysis in Financial Services. ELSEVIER.
芝加哥风格引文Youngman, Ian. Competitor Analysis in Financial Services. ELSEVIER, 1998.
MLA引文Youngman, Ian. Competitor Analysis in Financial Services. ELSEVIER, 1998.
警告：这些引文格式不一定是100％准确.