Society, A. M. (2009). Proceedings of the American Mathematical Society. Volume 137, Number 10, 2009. American Mathematical Society.
Dyfyniad Arddull ChicagoSociety, American Mathematical. Proceedings of the American Mathematical Society. Volume 137, Number 10, 2009. American Mathematical Society, 2009.
Dyfyniad MLASociety, American Mathematical. Proceedings of the American Mathematical Society. Volume 137, Number 10, 2009. American Mathematical Society, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.