Magnusson, D., & Mabon, H. (1967). Test theory. Addison-Wesley Pub.
Lua i Stíl Chicago (17ú heag.)Magnusson, David, agus Hunter Mabon. Test Theory. Reading, Mass: Addison-Wesley Pub, 1967.
Lua MLA (9ú heag.)Magnusson, David, agus Hunter Mabon. Test Theory. Addison-Wesley Pub, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.