Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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