ZILL, D. G., & DEWAR, J. M. (1990). Trigonometry.-- Ed.2. McGraw-Hill.
芝加哥风格引文ZILL, Dennis G., 与 Jacqueline M. DEWAR. Trigonometry.-- Ed.2. New York: McGraw-Hill, 1990.
MLA引文ZILL, Dennis G., 与 Jacqueline M. DEWAR. Trigonometry.-- Ed.2. McGraw-Hill, 1990.
警告:这些引文格式不一定是100%准确.