KELLER, M. (1972). Intermediate algebra: A text workbook. Houghton Mifflin co.
芝加哥风格引文KELLER, M.Wiles. Intermediate Algebra: A Text Workbook. Atlanta: Houghton Mifflin co, 1972.
MLA引文KELLER, M.Wiles. Intermediate Algebra: A Text Workbook. Houghton Mifflin co, 1972.
警告：这些引文格式不一定是100％准确.