Sharpe, D. W. (1987). Rings and factorization. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Sharpe, David W. Rings and Factorization. Cambridge: Cambridge University Press, 1987.
Lua MLA (9ú heag.)Sharpe, David W. Rings and Factorization. Cambridge University Press, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.