Smith, D. E. (1900). The teaching of elementary mathematics QA11. Macmillan.
芝加哥风格引文Smith, David Eugene. The Teaching of Elementary Mathematics QA11. New York: Macmillan, 1900.
MLA引文Smith, David Eugene. The Teaching of Elementary Mathematics QA11. Macmillan, 1900.
警告：这些引文格式不一定是100％准确.