Spence, D. (1997). Introduction to Futures and Options. ELSEVIER.
芝加哥风格引文Spence, Donald. Introduction to Futures and Options. ELSEVIER, 1997.
MLA引文Spence, Donald. Introduction to Futures and Options. ELSEVIER, 1997.
警告：这些引文格式不一定是100％准确.
APA引文