Hackert, A. F. (1989). College algebra. Harcourt brace jovanovich.
芝加哥风格引文Hackert, Adelbert F. College Algebra. San diego: Harcourt brace jovanovich, 1989.
MLA引文Hackert, Adelbert F. College Algebra. Harcourt brace jovanovich, 1989.
警告：这些引文格式不一定是100％准确.