Steffensen, A. R., & Johnson, L. M. (1981). Algebra and trigonometry. Scott, Foresman and Company.
芝加哥风格引文Steffensen, Arnold R., 与 L. Murphy Johnson. Algebra and Trigonometry. Glenview, IL: Scott, Foresman and Company, 1981.
MLA引文Steffensen, Arnold R., 与 L. Murphy Johnson. Algebra and Trigonometry. Scott, Foresman and Company, 1981.
警告：这些引文格式不一定是100％准确.