Novikov, I. D. (1998). The river of time. Cambridge University Press.
Dyfyniad Arddull ChicagoNovikov, I. D. The River of Time. Cambridge: Cambridge University Press, 1998.
Dyfyniad MLANovikov, I. D. The River of Time. Cambridge University Press, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.