Ryan, M. (1993). Prentice Hall advanced mathematics: A precalculus approach. Prentice Hall.
芝加哥风格引文Ryan, Merilyn. Prentice Hall Advanced Mathematics: A Precalculus Approach. Englewood Cliffs, N. J: Prentice Hall, 1993.
MLA引文Ryan, Merilyn. Prentice Hall Advanced Mathematics: A Precalculus Approach. Prentice Hall, 1993.
警告：这些引文格式不一定是100％准确.