Ribenboim, P. (1999). Fermat's last theorem for amateurs. Springer- Verlag.
Dyfyniad Arddull ChicagoRibenboim, Paulo. Fermat's Last Theorem for Amateurs. New York: Springer- Verlag, 1999.
Dyfyniad MLARibenboim, Paulo. Fermat's Last Theorem for Amateurs. Springer- Verlag, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.