Alaexander, D. C. (1999). Elementary geometry for college students (2nd ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Alaexander, Daniel C. Elementary Geometry for College Students. 2nd ed. Boston, MA: Houghton Mifflin, 1999.
Lua MLA (9ú heag.)Alaexander, Daniel C. Elementary Geometry for College Students. 2nd ed. Houghton Mifflin, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.