APA (7th ed.) Citation

Smith, D. E. (1900). The teaching of elementary mathematics QA11. Macmillan.

Chicago Style (17th ed.) Citation

Smith, David Eugene. The Teaching of Elementary Mathematics QA11. New York: Macmillan, 1900.

MLA (9th ed.) Citation

Smith, David Eugene. The Teaching of Elementary Mathematics QA11. Macmillan, 1900.