APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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