Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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