Smith, W. K. (1972). Analytic geometry. New York : Macmillan.
Lua i Stíl Chicago (17ú heag.)Smith, William K. Analytic Geometry. New York : Macmillan, 1972.
Lua MLA (9ú heag.)Smith, William K. Analytic Geometry. New York : Macmillan, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.