Smith, D. E. (1900). The teaching of elementary mathematics QA11. Macmillan.
Lua i Stíl Chicago (17ú heag.)Smith, David Eugene. The Teaching of Elementary Mathematics QA11. New York: Macmillan, 1900.
Lua MLA (9ú heag.)Smith, David Eugene. The Teaching of Elementary Mathematics QA11. Macmillan, 1900.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.