Rietz, H. L. (1939). College algebra (4th ed.). Henry Holt and Company.
芝加哥风格引文Rietz, Henry Lewis. College Algebra. 4th ed. New York: Henry Holt and Company, 1939.
MLA引文Rietz, Henry Lewis. College Algebra. 4th ed. Henry Holt and Company, 1939.
警告：这些引文格式不一定是100％准确.