Weiss, R. M. (2006). Quadrangular algebras. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Weiss, Richard M. Quadrangular Algebras. Princeton, N.J.: Princeton University Press, 2006.
Lua MLA (9ú heag.)Weiss, Richard M. Quadrangular Algebras. Princeton University Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.