Fred L. Bookstein. (2014). Measuring and Reasoning (1.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Fred L. Bookstein. Measuring and Reasoning. 1. Cambridge University Press, 2014.
Lua MLA (8ú heag.)Fred L. Bookstein. Measuring and Reasoning. 1. Cambridge University Press, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.