Rinvolucri, M., Burbidge, N., Gray, P., & Levy, S. (1996). Letters. Oxford: Oxford University Press.
Dyfyniad Arddull ChicagoRinvolucri, Mario., Nicky Burbidge, Peta Gray, và Sheila Levy. Letters. Oxford: Oxford University Press, 1996.
Dyfyniad MLARinvolucri, Mario., Nicky Burbidge, Peta Gray, và Sheila Levy. Letters. Oxford: Oxford University Press, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.